Acta Physica Sinica //www.getgobooth.com/ 必威体育下载 daily 15 2024-08-20 10:33:39 apsoffice@iphy.ac.cn apsoffice@iphy.ac.cn 2024-08-20 10:33:39 zh Copyright ©Acta Physica Sinica All Rights Reserved. 京ICP备05002789号-1 Address: PostCode:100190 Phone: 010-82649829,82649241,82649863 Email: apsoffice@iphy.ac.cn Copyright ©Acta Physica Sinica All Rights Reserved apsoffice@iphy.ac.cn 1000-3290 <![CDATA[IN DEEP MOURNING OF OUR GREAT LEADER AND TEACHER CHAIRMAN MAO]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.461 Author(s): ZHANG WEN-YU <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 461-462. Published 1976-03-05 Author(s): ZHANG WEN-YU <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 461-462. Published 1976-03-05 IN DEEP MOURNING OF OUR GREAT LEADER AND TEACHER CHAIRMAN MAO ZHANG WEN-YU 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 461-462. article doi:10.7498/aps.25.461 10.7498/aps.25.461 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.461 461-462 <![CDATA[SONS AND DAUGHTERS OF SHAOSHAN WILL FOREVER CHERISH THE MEMORY OF CHAIRMAN MAO, AND VOW TO CARRY TO THE END THE STRUGGLE AGAINST "THE GANG OF FOUR" ANTIPARTY CLIQUE]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.463 Author(s): MAO GUANG-YAO <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 463-464. Published 1976-03-05 Author(s): MAO GUANG-YAO <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 463-464. Published 1976-03-05 SONS AND DAUGHTERS OF SHAOSHAN WILL FOREVER CHERISH THE MEMORY OF CHAIRMAN MAO, AND VOW TO CARRY TO THE END THE STRUGGLE AGAINST "THE GANG OF FOUR" ANTIPARTY CLIQUE MAO GUANG-YAO 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 463-464. article doi:10.7498/aps.25.463 10.7498/aps.25.463 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.463 463-464 <![CDATA[DESIGN ANALYSIS FOR AN ORTHOGONAL-LOOP-COUPLING YIG TUNABLE FILTER]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.465 Author(s): SHEN JUE-LIAN, ZHANG PENG-XIANG, MO YU-JUN <br/><p>An orthogonal-loop-coupling YIG tunable filter is analyzed by using the equivalent circuit. By introducing a suitable expression for the self-inductance of the coupling loop, applicable formulae for designing multi-stage YIG filters are given. Using these formulae, an example for designing the two-stage filter is presented. Also, the influence of the parameters of the coupling loops on the passband response is analyzed for a single-stage YIG resonance filter.</p> <br/>Acta Physica Sinica. 1976 25(6): 465-471. Published 1976-03-05 Author(s): SHEN JUE-LIAN, ZHANG PENG-XIANG, MO YU-JUN <br/><p>An orthogonal-loop-coupling YIG tunable filter is analyzed by using the equivalent circuit. By introducing a suitable expression for the self-inductance of the coupling loop, applicable formulae for designing multi-stage YIG filters are given. Using these formulae, an example for designing the two-stage filter is presented. Also, the influence of the parameters of the coupling loops on the passband response is analyzed for a single-stage YIG resonance filter.</p> <br/>Acta Physica Sinica. 1976 25(6): 465-471. Published 1976-03-05 DESIGN ANALYSIS FOR AN ORTHOGONAL-LOOP-COUPLING YIG TUNABLE FILTER SHEN JUE-LIAN, ZHANG PENG-XIANG, MO YU-JUN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 465-471. article doi:10.7498/aps.25.465 10.7498/aps.25.465 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.465 465-471 <![CDATA[ON THE SCATTERING OF SOUND BY SOUND]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.472 Author(s): QIAN ZU-WEN <br/><p>The problem of the non-linear interaction between two fully collimated plane-wave beams travelling in different directions has given rise to much of the controversy to date as to whether the secondary scattered radiation exists outside the interaction region. Ingard et al. expressed the primary beams with a type of discontinuous function ρ={ej(w-ky),|x|a. Through calculations, they claimed that a scattered radiation is shown to exist outside the region of interaction. Assuming primary fields are plane waves of infinite extent, Westervelt studied the same problem, but a negative conclusion was obtained. By dividing co-ordinate space into the inside and outside of the common volume, Al-Temimi solved Westervelt's equation for both cases and concluded that the two conflicting results could relatively be brought together.Although in this paper only ideal beams interacting at right angles are discussed, the author suggests that this type of discontinuity can be more adequately described with a certain combination of unit-step functions. By applying and solving Westervelt's equation, the author obtains an interesting result, i.e., the secondary scattered radiations outside the common volume originate not from a volume source as claimed by Al-Temimi, but from a δ-function surface-dipole. However, this surface source is. artificial, because discontinuous functions which do not satisfy the homogeneous wave equation have been used to describe the primary waves. It is shown that the solution obtained by the author is the same as that of Al-Temimi, therefore, a relative agreement cannot be reached between the two conflicting results. A comment is also made on the latter's paper concerning the inappropriateness of the continuous conditions assumed at the boundaries. Based on the above discussions, the author predicts that if the primary beams are to be described by discontinuous functions, then the theories of the parametric transmitting and recieving arrays will be similarly affected.</p> <br/>Acta Physica Sinica. 1976 25(6): 472-480. Published 1976-03-05 Author(s): QIAN ZU-WEN <br/><p>The problem of the non-linear interaction between two fully collimated plane-wave beams travelling in different directions has given rise to much of the controversy to date as to whether the secondary scattered radiation exists outside the interaction region. Ingard et al. expressed the primary beams with a type of discontinuous function ρ={ej(w-ky),|x|a. Through calculations, they claimed that a scattered radiation is shown to exist outside the region of interaction. Assuming primary fields are plane waves of infinite extent, Westervelt studied the same problem, but a negative conclusion was obtained. By dividing co-ordinate space into the inside and outside of the common volume, Al-Temimi solved Westervelt's equation for both cases and concluded that the two conflicting results could relatively be brought together.Although in this paper only ideal beams interacting at right angles are discussed, the author suggests that this type of discontinuity can be more adequately described with a certain combination of unit-step functions. By applying and solving Westervelt's equation, the author obtains an interesting result, i.e., the secondary scattered radiations outside the common volume originate not from a volume source as claimed by Al-Temimi, but from a δ-function surface-dipole. However, this surface source is. artificial, because discontinuous functions which do not satisfy the homogeneous wave equation have been used to describe the primary waves. It is shown that the solution obtained by the author is the same as that of Al-Temimi, therefore, a relative agreement cannot be reached between the two conflicting results. A comment is also made on the latter's paper concerning the inappropriateness of the continuous conditions assumed at the boundaries. Based on the above discussions, the author predicts that if the primary beams are to be described by discontinuous functions, then the theories of the parametric transmitting and recieving arrays will be similarly affected.</p> <br/>Acta Physica Sinica. 1976 25(6): 472-480. Published 1976-03-05 ON THE SCATTERING OF SOUND BY SOUND QIAN ZU-WEN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 472-480. article doi:10.7498/aps.25.472 10.7498/aps.25.472 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.472 472-480 <![CDATA[THE NORMAL-MODE SOUND FIELD IN SHALLOW WATER HAVING A POSITIVE SOUND VELOCITY GRADIENT AND A RANDOM FLUCTUATION SURFACE]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.481 Author(s): TANG YING-WU <br/><p>In this paper, the effect of a random fluctuation surface on the sound field of a harmonic point source in positive sound velocity gradient shallow water is consideved. Approximate expressions for the pole equations and amplitude functions are obtained. It is found that the results of reference [1] are the limiting case of the results of this paper.</p> <br/>Acta Physica Sinica. 1976 25(6): 481-486. Published 1976-03-05 Author(s): TANG YING-WU <br/><p>In this paper, the effect of a random fluctuation surface on the sound field of a harmonic point source in positive sound velocity gradient shallow water is consideved. Approximate expressions for the pole equations and amplitude functions are obtained. It is found that the results of reference [1] are the limiting case of the results of this paper.</p> <br/>Acta Physica Sinica. 1976 25(6): 481-486. Published 1976-03-05 THE NORMAL-MODE SOUND FIELD IN SHALLOW WATER HAVING A POSITIVE SOUND VELOCITY GRADIENT AND A RANDOM FLUCTUATION SURFACE TANG YING-WU 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 481-486. article doi:10.7498/aps.25.481 10.7498/aps.25.481 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.481 481-486 <![CDATA[A PHASE TRANSITION MODEL NOT IN ACCORDANCE WITH THE SCALING LAW]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.487 Author(s): SUN XIN <br/><p>For a three-dimensional eight-vertex model with energy parameters satisfying the condition ε1+ε2=ε3+ε4, all the critical exponents have been calculated:α=α′=0,β=1/4,δ=7,γ=1/2,γ′=3/2,ν=ν′=1,η=3/2. These do not satisfy the scaling law, the reason is that the correlative region of polarization contracts from the crystal planes (1, 1, 1) and (1, 1, 1) to the crystal axis [1, 0, 1] at the critical point.</p> <br/>Acta Physica Sinica. 1976 25(6): 487-493. Published 1976-03-05 Author(s): SUN XIN <br/><p>For a three-dimensional eight-vertex model with energy parameters satisfying the condition ε1+ε2=ε3+ε4, all the critical exponents have been calculated:α=α′=0,β=1/4,δ=7,γ=1/2,γ′=3/2,ν=ν′=1,η=3/2. These do not satisfy the scaling law, the reason is that the correlative region of polarization contracts from the crystal planes (1, 1, 1) and (1, 1, 1) to the crystal axis [1, 0, 1] at the critical point.</p> <br/>Acta Physica Sinica. 1976 25(6): 487-493. Published 1976-03-05 A PHASE TRANSITION MODEL NOT IN ACCORDANCE WITH THE SCALING LAW SUN XIN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 487-493. article doi:10.7498/aps.25.487 10.7498/aps.25.487 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.487 487-493 <![CDATA[THE WAVE FUNCTION OF MESONS IN THE STRATON MODEL]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.494 Author(s): HU NING <br/><p>An equation of the Bethe-Salpeter type is used to obtain the internal wave function of mesons. It is found that if the potential well between the straton and anti-straton is of the pseudo-scalar type, then the 0- and 1- mesons will satisfy the same approximate radial wave function, and thus lead to SU6 symmetry. We have shown previously that pseudo-scalar potential is the only single type of potential which leads to this symmetry. The potential is V = V0+ V1, where V0 represents a super-strong deep well, the effect of which is to reduce the very large mass M of the free straton to a small effective value. The motion of the straton inside the meson is therefore relativistic. V1 represents a small potential of the order of 1/M of a simple harmonic oscillator. A tensor force is also introduced to account for the splitting of energy levels of the states with the same spin and orbital angular momentum. Our solutions for the ground and angular excited states of 0- and 1- mesons practically explain all the observed meson states. Our theory can apply equally to the baryon states if the phenomenological potential V0 is reduced by a factor of 2.</p> <br/>Acta Physica Sinica. 1976 25(6): 494-506. Published 1976-03-05 Author(s): HU NING <br/><p>An equation of the Bethe-Salpeter type is used to obtain the internal wave function of mesons. It is found that if the potential well between the straton and anti-straton is of the pseudo-scalar type, then the 0- and 1- mesons will satisfy the same approximate radial wave function, and thus lead to SU6 symmetry. We have shown previously that pseudo-scalar potential is the only single type of potential which leads to this symmetry. The potential is V = V0+ V1, where V0 represents a super-strong deep well, the effect of which is to reduce the very large mass M of the free straton to a small effective value. The motion of the straton inside the meson is therefore relativistic. V1 represents a small potential of the order of 1/M of a simple harmonic oscillator. A tensor force is also introduced to account for the splitting of energy levels of the states with the same spin and orbital angular momentum. Our solutions for the ground and angular excited states of 0- and 1- mesons practically explain all the observed meson states. Our theory can apply equally to the baryon states if the phenomenological potential V0 is reduced by a factor of 2.</p> <br/>Acta Physica Sinica. 1976 25(6): 494-506. Published 1976-03-05 THE WAVE FUNCTION OF MESONS IN THE STRATON MODEL HU NING 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 494-506. article doi:10.7498/aps.25.494 10.7498/aps.25.494 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.494 494-506 <![CDATA[ON THE PROBLEM OF THE DUAL CHARGE OF NON-ABELIAN GAUGE GROUPS -----A DISCUSSION ON MAGNETIC MONOPOLES]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.507 Author(s): LI HUA-ZHONG, XIAN DING-CHANG, GUO SHUO-HONG <br/><p>Starting from the integral definition of gauge fields, and using a formularesembling the Gauss-Bonnet theorem - a theorem in differential geometryon compact manifolds, we derive a general conjugate relationship between the gauge charge and the dual charge. The relation between electronic charge and the magnetic monopole is an example of this conjugate relationship. For an SO (3) gauge group with a U (1) group as its invariant subgroup, we obtain the 't Hooft monopole solution as a special solution, without introducing any concept of singular strings or any mechanism such as the spontaneous breaking of symmetries.</p> <br/>Acta Physica Sinica. 1976 25(6): 507-513. Published 1976-03-05 Author(s): LI HUA-ZHONG, XIAN DING-CHANG, GUO SHUO-HONG <br/><p>Starting from the integral definition of gauge fields, and using a formularesembling the Gauss-Bonnet theorem - a theorem in differential geometryon compact manifolds, we derive a general conjugate relationship between the gauge charge and the dual charge. The relation between electronic charge and the magnetic monopole is an example of this conjugate relationship. For an SO (3) gauge group with a U (1) group as its invariant subgroup, we obtain the 't Hooft monopole solution as a special solution, without introducing any concept of singular strings or any mechanism such as the spontaneous breaking of symmetries.</p> <br/>Acta Physica Sinica. 1976 25(6): 507-513. Published 1976-03-05 ON THE PROBLEM OF THE DUAL CHARGE OF NON-ABELIAN GAUGE GROUPS -----A DISCUSSION ON MAGNETIC MONOPOLES LI HUA-ZHONG, XIAN DING-CHANG, GUO SHUO-HONG 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 507-513. article doi:10.7498/aps.25.507 10.7498/aps.25.507 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.507 507-513 <![CDATA[DUAL CHARGE OF A NON-ABELIAN GAUGE FIELD]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.514 Author(s): HOU BO-YU, DUAN YI-SHI, GE MO-LIN <br/><p>The gauge inrariant expressions and relations of various physical quantities in the non-Abelian SU (2) gauge field, such as electric charge, dual charge (magnetic charge), electromagnetic field and massive vector field, are studied, The relation between magnetic charge and the large scale topological property of the isotopic directions of the charge operator is shown.</p> <br/>Acta Physica Sinica. 1976 25(6): 514-520. Published 1976-03-05 Author(s): HOU BO-YU, DUAN YI-SHI, GE MO-LIN <br/><p>The gauge inrariant expressions and relations of various physical quantities in the non-Abelian SU (2) gauge field, such as electric charge, dual charge (magnetic charge), electromagnetic field and massive vector field, are studied, The relation between magnetic charge and the large scale topological property of the isotopic directions of the charge operator is shown.</p> <br/>Acta Physica Sinica. 1976 25(6): 514-520. Published 1976-03-05 DUAL CHARGE OF A NON-ABELIAN GAUGE FIELD HOU BO-YU, DUAN YI-SHI, GE MO-LIN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 514-520. article doi:10.7498/aps.25.514 10.7498/aps.25.514 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.514 514-520 <![CDATA[RAMAN SCATTERING OF RELATIVISTIC ELECTRONS IN A STRONG MAGNETIC FIELD]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.521 Author(s): FANG LI-ZHI, LIU YONG-ZHEN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 521-526. Published 1976-03-05 Author(s): FANG LI-ZHI, LIU YONG-ZHEN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 521-526. Published 1976-03-05 RAMAN SCATTERING OF RELATIVISTIC ELECTRONS IN A STRONG MAGNETIC FIELD FANG LI-ZHI, LIU YONG-ZHEN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 521-526. article doi:10.7498/aps.25.521 10.7498/aps.25.521 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.521 521-526 <![CDATA[SEISMIC SPECTRA, AND VARIATIONS IN THE SEISMIC SPECTRA OF MEDIUM-SCALE EARTHQUAKES BEFORE AND AFTER STRONG EARTHQUAKES]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.527 Author(s): QI GUO-YING, GUO YA-PING <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 527-532. Published 1976-03-05 Author(s): QI GUO-YING, GUO YA-PING <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 527-532. Published 1976-03-05 SEISMIC SPECTRA, AND VARIATIONS IN THE SEISMIC SPECTRA OF MEDIUM-SCALE EARTHQUAKES BEFORE AND AFTER STRONG EARTHQUAKES QI GUO-YING, GUO YA-PING 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 527-532. article doi:10.7498/aps.25.527 10.7498/aps.25.527 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.527 527-532 <![CDATA[ESTIMATION OF THE CONDITIONS FOR SYNTHESIZING A15 TYPE Nb<sub<3</sub<Si AT HIGH PRESSURE]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.533 Author(s): XU JI-AN, ZHU ZAI-WAN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 533-535. Published 1976-03-05 Author(s): XU JI-AN, ZHU ZAI-WAN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 533-535. Published 1976-03-05 ESTIMATION OF THE CONDITIONS FOR SYNTHESIZING A15 TYPE Nb&lt;sub&lt;3&lt;/sub&lt;Si AT HIGH PRESSURE XU JI-AN, ZHU ZAI-WAN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 533-535. article doi:10.7498/aps.25.533 10.7498/aps.25.533 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.533 533-535 <![CDATA[ON THE HYSTERESIS LOOPS OF LIQUID-PHASE-SINTERED SmCo<sub<5</sub<, PERMANENT MAGNET AT VARIOUS TEMPERATURES]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.536 Author(s): NEW MATERIALS LABORATORY <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 536-540. Published 1976-03-05 Author(s): NEW MATERIALS LABORATORY <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 536-540. Published 1976-03-05 ON THE HYSTERESIS LOOPS OF LIQUID-PHASE-SINTERED SmCo&lt;sub&lt;5&lt;/sub&lt;, PERMANENT MAGNET AT VARIOUS TEMPERATURES NEW MATERIALS LABORATORY 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 536-540. article doi:10.7498/aps.25.536 10.7498/aps.25.536 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.536 536-540 <![CDATA[A POSSIBLE MESON SPECTRUM AND THE PRODUCTION AND DECAY OF THE NEW PARTICLES IN THE SU<sub<3</sub<<sup<(1)</sup<×SU<sub<3</sub<<sup<(2)</sup< MODEL]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.541 Author(s): LI XIAO-YUAN, DU DONG-SHENG, WU JI-MIN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 541-545. Published 1976-03-05 Author(s): LI XIAO-YUAN, DU DONG-SHENG, WU JI-MIN <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 541-545. Published 1976-03-05 A POSSIBLE MESON SPECTRUM AND THE PRODUCTION AND DECAY OF THE NEW PARTICLES IN THE SU&lt;sub&lt;3&lt;/sub&lt;&lt;sup&lt;(1)&lt;/sup&lt;×SU&lt;sub&lt;3&lt;/sub&lt;&lt;sup&lt;(2)&lt;/sup&lt; MODEL LI XIAO-YUAN, DU DONG-SHENG, WU JI-MIN 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 541-545. article doi:10.7498/aps.25.541 10.7498/aps.25.541 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.541 541-545 <![CDATA[A LASER INTERFEROMETER FOR SMALL ANGLE MEASUREMENT]]> //www.getgobooth.com/en/article/doi/10.7498/aps.25.546 Author(s): LENGTH LABORATORY <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 546-548. Published 1976-03-05 Author(s): LENGTH LABORATORY <br/><p></p> <br/>Acta Physica Sinica. 1976 25(6): 546-548. Published 1976-03-05 A LASER INTERFEROMETER FOR SMALL ANGLE MEASUREMENT LENGTH LABORATORY 1976-03-05 Personal use only, all commercial or other reuse prohibited Acta Physica Sinica. 1976 25(6): 546-548. article doi:10.7498/aps.25.546 10.7498/aps.25.546 Acta Physica Sinica 25 6 1976-03-05 //www.getgobooth.com/en/article/doi/10.7498/aps.25.546 546-548
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