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      constant     
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  常数
    π-Λ COUPLING CONSTANT AND LOW ENERGY π-Λ P_(3/2) WAVE SCATTERING
    π-Λ耦合常数和π-Λ低能P_(3/2)波散射
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    A THEORETICAL EXPLANATION ON THE RELATION BETWEEN LATTICE CONSTANT AND TRANSITION TEMPERATURE OF A-15 SUPERCONDUCTING COMPOUNDS
    A-15型超导化合物转变温度与晶格常数关系的理论解释
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    SPECTRUM AND CRITICAL COUPLING CONSTANT OF MASSLESS THIRRING MODEL
    无质量Thirring模型的能谱和临界耦合常数
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    DETERMINATION OF THE RATIO OF THE SPIN ROTATION COUPLING CONSTANT TO THE SPIN EXCHANGE CONSTANT FOR THE K~(39)Xe~(129)VAN DER WAALS MOLECULE
    范德瓦耳斯分子K~(39)Xe~(129)中的自旋-转动对自旋交换耦合常数之比的确定
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    Color-Dielectric Constant and Quark Confinement Potential
    色介常数与夸克禁闭位势
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  常数的
    Determinatiou of the Amplitude of π-Condensed Field and ππ Interaction Constant in N=Z Nuclei
    N=Z核中π凝聚场振幅和ππ相互作用常数的确定
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    Calculation for Dielectric Constant of Heterogeneous Dielectric
    不均匀介质介电常数的计算
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    Measuring formation rate constant of trimer Kr)2F~* in F_2/Ne/Kr mixture
    F_2/Ne/Kr混合气体中三原子准分子Kr_2F形成速率常数的测定
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    The Measurement of Verdet Constant of Fiber Current Sensor
    光纤电流传感器的系统Verdet常数的测定
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    MICROWAVE MEASUREMENT OF COMPLEX DIELECTRIC CONSTANT
    介质复数介电常数的微波测量
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  常量
    Using solid phase reaction method,the perovskite Pr(0.64)Ag(0.044)MnAl(0.2)O3 with super magnetoresistance is prepared. By analyzing its structure and components,it is found that integral perovskite structure can be formed only when the sintering temperature is higher than 1 100 ℃,the structure is cubic with its lattice constant of about 0.386 nm.
    通过固相烧结法制备了具有特大磁电阻效应的钙钛矿材料Pr0.64Ag0.044MnAl0.2O3.利用结构和成分分析,发现此材料只有在1 100℃高温烧结下才能生成完整的钙钛矿结构,且属于立方晶系,晶格常量a≈0.386 nm.
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    AN EXPERIMENT MEASURING PLANCK CONSTANT AIDED BY MICROCOMPUTER
    计算机辅助测定Planck常量实验
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    A CALCULATION OF THE EXCHANGE INTERACTION CONSTANT BETWEEN THE R-SUBLATTICE AND THE 3d-SUBLATTICE IN R_2Fe_(17-x)Al_x COMPOUNDS
    R_2Fe_(17-x)Al_x化合物中R-T交换耦合常量的计算
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    The Error Analysis in Measuring Planck Constant
    普朗克常量测定的误差分析
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    Measurement of relative dielectric constant by balance
    用天平测定电介质的相对介电常量
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  恒量
    The Uncertainty Principle and Basic Hypothesis and Constant
    不确定原理与基本假定和守恒量
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    Probability Current DensityIs a Constant vector in the Penetration of a Rectangular Potential Barrier
    概率流密度矢量是方形势垒穿透中之守恒量
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    Research on Gas Constant R
    论普适气体恒量R
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    Basing on the permeating power of helium through glass, we have derived the dynamic equation for the pressure of He in a He-Cd laser and the replenishing equations for replenisher of He at constant temperature and constant quantity.
    根据玻璃渗氦特性,导出了氦—镉激光器氦气压动态方程,氦补充器恒温补充方程和恒量补充方程。
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    In two dimensional homogenous harmonic oscillators, except for Hamiltonian there are still three independent constant observables.
    在二维各向同性谐振子中,除哈密顿量外还有三个独立的守恒量
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      constant
           These allow natural representations of constant and, sometimes, linear components.
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           We study nonlinear dispersive systems of the form where k=1, …, n, j ∈ ?+, and Pk(·) are polynomials having no constant or linear terms.
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           We show that if(X,Σ, μ) is not purely atomic, then the unconditional basis constant of our basis is (max(p, q) -1).
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           The first result is an enhancement of the Paley-Wiener type constant for nonharmonic series given by Duffin and Schaefer in [6] and used recently in some applications (see [3]).
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           We show how to reconstruct functions satisfying the scaling equations above and show that ?2, …, ?q always constitute a tight frame with constant 1.
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             The absorption wavemeter investigated consists of a single loop with a variable gap which is formed by a pair of parallel plates. A calibration formula for the meter was derived on the assumption that the stray capacity could be considered constant and the stray inductance negligible. This simple and useful formula was ex perimentally checked on four different meters, covering the range from about one-and-quarter meter to one-half meter. These melors were carefully constructed and accurately calibrate...
                在吸收式波长计之理论上,以其杂储电量为常数而略其杂磁感量,得一简便之公式虽在波长一公尺左右亦可用。所研究之吸收式波长计之构造,系一黄铜制成之单圈,用二黄铜片制成之一缝隙。其缝隙之宽度,可由一螺旋调节。此种波长计,曾 在国立中央研究院物理研究所制造室制造四具,可量波长一有四分之一公尺至半公尺亦曾在此研究所之实验室内,与水晶振荡器校准先制一振荡器,可在六至十公尺之间,发生无论任何波长之振荡。并将此振荡器与一水晶振荡器用拍谐法校准。再制一有四分之一公尺至半公尺之振荡器,与已与水晶校准之振荡器,再用拍谐法校准,而同时以所制之吸收式波长计量之其实验与理论所得之各结果极为符合。
    文摘来源
             The dielectrie constants of toluene, carbon bisulphide, normal pentane, normal hexane, ethyl ether and iso-amyl alcohol were measured by a capacity bridge using a specially constructed liquid condenser at both 30° and 75℃ (22.4℃ only for the last liquid), for frequencies of 600,1000 and 2000 cycles per sec. and under pressures from 1 up to 12,000 kg/cm2. For the first four liquids, the dielectric constant is practically independent of the frequencies
                作者用一电容桥及一特制之液体蓄电器以量甲苯,二硫化碳,正戊烷,正己烷,乙醚,及异戊醇之比电容。所用温度为摄氏三十及七十五度(异戊醇之温度仅为二十二度四),频率为每秒六百,一千及二千周,压力自一气压高至一万二千气压。前四液之比电容几与所用频率无关。(ε-1)/(ε+2)·1/d,(ε-1)/d及(ε~(1/2))-1/d三式中以第一式最近一常数,然压力渐增第一式之值恒随之而渐减,至一万二千气压时(在甲苯为九千五百气压),其减少约数在甲苯及二硫化碳为百分之三,在乙醚为百分之八,在异戊醇为百分之十九,显随电矩之增加而增加,至其原因篇中亦略加说明。 篇中图表惠蒙同事朱福炘先生代为抄绘,附誌谢忱。
    文摘来源
             Self-recording system is devised and used to measure potential gradient at Yenching. In fine weather the results show two maxima and two minima for a whole day. During raining potential gradient is constant at zero value, except when lightening and thunderstorm occur in which case the potential gradient changes rapidly both in magnitude and direction.
                本篇所述,为在北平燕京大学用静电计及一连续记录器测量大气电位梯度之方法及结果测量方法,乃用一种均位器(eqalizer)将离地面约3至6米高之电位显示于静电计上再用照相纸将此电位制成连续记录。测量所得结果如下:晴天之电位梯度。一日之中,有二最高值及二最低值雨时梯度即降至零,且此值非至雨止不变。当闪电及雷飓时,梯度之方向与值,变易极速。且较晴天时为大。
    文摘来源
     
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