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coefficient     
相关语句
  系数
     Studies and Analysis on the Varying Coefficient Model
     变系数模型的研究与分析
短句来源
     Effect of Laser Parameters on Momentum Coupling Coefficient of Laser Propulsion
     激光参量对激光推进中冲量耦合系数的影响
短句来源
     Study on Resistance Coefficient of Reeds and Numerical Simulation of Flow in Wetland
     芦苇阻力系数物模及湿地水流数模研究
短句来源
     SURFACE IMPEDANCE AND TRANSPARENT COEFFICIENT OF METALS IN THE INFRARED
     金属在红外波段的表面电阻和电磁波的穿透系数
短句来源
     Activity coefficient of Hydrochloric acid in quarternay systems of the type HCl-MeCl_m-MéCl_n-H_2O 1. HCl-KCl-NaCl-H_2O and HCl-KCl-LiCl-H_2O
     四元体系HCl-MeCl_m-MeCl_n-H_2O中盐酸的活度系数Ⅰ.HCl-KCl-NaCl-H_2O及HCl-KCl-LiCl-H_2O体系
短句来源
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  因数
     The temperature coefficient of permittivity gradually increases from 72×10~(-6)/℃ to 470×10~(-6)/℃ and then decreases to-100×10~(-6)/℃,and the Q value decreaseds from 1 250 to 40 at microwave frequencies at 20—85 ℃.
     样品在20~85℃,1 MHz时的介电常数温度系数由72×10-6/℃逐渐增加到470×10-6/℃,然后降为100×10-6/℃,样品在微波频率下的品质因数Q值从1 250逐渐降低至40。
短句来源
     Experiment Research on Friction Coefficient of Fe_3O_4 Ferrofluid
     Fe_3O_4磁流体润滑摩擦因数试验研究
短句来源
     The electromechanical coupling coefficient k26 was about 13% for ( yxl) -30° cut of La3Ga5SiO14 crystal.
     (yxl)-30°切La3Ga5SiO14晶片具有较大的机电耦合系数k26'≈13%和较大的机械品质因数Qm≈10000.
     The results showed friction coefficient stabilized at 0.28~0.38,friction rate(0.04~0.51)×10-7 cm3/N·m,impact strength above 2 940 J/m2,hardness above 100HRC and adhesive tensile shearing strength above 4.06 MPa at the maximum load 2.54 kN.
     试验结果表明,摩擦材料的摩擦因数稳定在0.28~0.38,磨损率保持在(0.04~0.51)×10-7cm3/N·m,抗冲击强度>2.94×103J/m2,洛氏硬度>100,在2.54kN最大载荷下的胶粘剂拉伸剪切强度>4.06MPa;
短句来源
     When content of fillers is 5%,the friction coefficient and wear width of UHMWPE/PP/CB/CF and UHMWPE/PP/CB composites respectively decrease 10%,44% and 12%,42% compared with UHMWPE.
     与UHM-WPE相比,UHMWPE/PP/CB/CF复合材料的摩擦因数和磨痕宽度分别下降了10%和44%,UHMWPE/PP/CB复合材料则分别下降了12%和42%。
短句来源
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  系数(
     Approximation of Maximum Modification Coefficient (X_0)max for Special Tooth-Slotting Tool
     专用插齿刀最大变位系数(X_0)_(max)的选择
短句来源
     A PRELIMINARY STUDY ON THE RELATIONSHIP BETWEEN DENSITY AND EXTINCTION COEFFICIENT (K VALUE) IN MILLET COMMUNITY
     夏谷群落的密度与消光系数(K值)关系的初步研究
短句来源
     THERMODYNAMICS OF MULTICOMPONENT ELECTROLYTE SOLUTIONS——Ⅱ.ACTIVITY COEFFICIENT FOR THE SYSTEM HCl-CoCl_2-H_2O AT 298.15K
     多组分电解质溶液热力学——Ⅱ.HCl-CoCl_2-H_2O 体系中 HCl 的活度系数(298.15K)
短句来源
     INVESTIGATION OF FACTORS INFLUENCING PERMEABILITY TEMPERATURE COEFFICIENT (α) OF MAGNETIC POWDER CORE CONTAINING HIGH NICKEL
     高镍磁粉芯导磁率温度系数(α)影响因素的研究
短句来源
     ACTIVITY COEFFICIENT OF BENZENE AND n-HEXANE IN METHANOL SALT SOLUTIONS AT 298K
     苯和正己烷在盐甲醉溶液中的活度系数(298K)
短句来源
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     A NOTE ON THE NEGATIVE TEMPERATURE COEFFICIENT OF RESISTIVITY OF A Fe-25Mn-5Al-0.2C ALLOY IN LOW TEMPERATURE
     Fe-25Mn—5Al-0.2C合金低温电阻的负温度系数行为
短句来源
     Correlation between Optical Absorption Coefficient at 10.6μm and the Resistivity of Crystalline Silicon
     单晶硅的10.6μm光吸收系数与电阻的关系
短句来源
     Relation between Net Ineyement of Sludge and Its Composite Coefficient and Oxidation Rate
     污泥净生成量和合成系数、自身氧化的关系
短句来源
     THE RELATION BETWEEN OPTIMAL PERFORMANCE COEFFICIENT AND RATE OF HEATING OF A ENDOREVERSIBLE THREE SOURCE HEAT PUMP WITH NONLINEAR HEAT TRANSFER
     非线性传热情况下内可逆三热源热泵的最佳供热系数与供热间的关系
短句来源
     Coefficient of Performance of an Internal Ireversible Absorption Heat Pump at the Maximum Rate of Pumping-Heat
     最大供热时内不可逆吸收式热泵的供热系数
短句来源
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  coefficient
When one expands a Schur function in terms of the irreducible characters of the symplectic (or orthogonal) group, the coefficient of the trivial character is 0 unless the indexing partition has an appropriate form.
      
Asymptotic Behavior of Variable-Coefficient Toeplitz Determinants
      
The partial autocorrelation coefficient matrices are computed directly from Levinson's recursions.
      
Further the PLS coefficient contour maps from CoMFA and CoMSIA, well explain the structural variation of the PPARα inhibitors.
      
1) for R isomers with correlation coefficient r =0.9, chance= 0.05 and match= 0.47 has four biophoric sites and three secondary sites while the best model for S isomers (model no.
      
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A simple calculation has been carried out for the absqrption coefficient of H-. The matrix component of transition is calculated from the combination of a free-electron wave function obtained by averaging the Hylleraas wave function for H- over the coordinates of one electron. The absorption coefficient covering a wide range of optical spectrum is in the order of 10-17 cm2.

本文根据波动力学计算H~-之吸收系数若H~-吸收较短於λ=17254A光线时,吾人应得一极宽连续光谱。依本文极简单计算,其系数大都在10~(-17)cm~2附近。

By surrounding a photo-neutron source of Ra+Ee with a thin spherical sbell of paraffin, a continuous spectrum of scattered neutrons, extending from zero energy to the energies of the primary neutrons is obtained. When a silver detector is exposed to such a spectrum, a part of the neutrons having just the energies at resonance with the silver nuclei is strongly absorbed by the detector and thereby produces the induced β-activity. By measuring the activity of silver and the apparent absorption coefficient...

By surrounding a photo-neutron source of Ra+Ee with a thin spherical sbell of paraffin, a continuous spectrum of scattered neutrons, extending from zero energy to the energies of the primary neutrons is obtained. When a silver detector is exposed to such a spectrum, a part of the neutrons having just the energies at resonance with the silver nuclei is strongly absorbed by the detector and thereby produces the induced β-activity. By measuring the activity of silver and the apparent absorption coefficient of the resonance neutrons in a thin silver absorber, the total width of the resonance levels effective to neutron capture and located in the above spectrum is estimated. Let τ He the average value of one half of the half-value width of the resonance levels, expressed in volts, and n be the number of resonance levels here concerned. We find nτ=260 volts for the silver nuclei of half period 22" if the energies of the primary neutrons are taken to be 2x 105 volts. Knowing nτ, we can evaluate the average spacing between adjacent resonance levels effective to neutron capture by giving a plausible value to τ. We find a spacing of the order 80-800 volts if τ be given the value 0.1-1.0 volt. This result is in good accord with the recent theoretical calculation of Bethe and also with observations of resonance groups in the low energy region.

把‘镭—铍’所产生的‘光中子’,穿过一层半厘米厚的白蜡,我们便得到一‘连续的中子谱’。他们中间有些中子,能和银的原子核起‘共振作用’,因此可以被银片吸收,而产生‘人工放射银’先测量人工放射的强度和‘共振中子’在银片中的吸收率,再应用原子核内共振能层的宽度,我们便可以求出银的原子核内‘共振能层’的密度大约共振能在零和二十万伏特中间,平均每隔一二百伏特便有一可以吸收质子的共振能层,和理论很相符合。

The circumferential vibration of a hollow quartz cylinder has been thoroughly studied. The empirical relation connecting the dimensions of the cylinder and the frequency of vibration has been formulated, and the temperature coefficients of the frequency determined. The temperature coefficient is practically zero for a wide range of temperature, when the ratio of the internal radius to the external radius of the cylinder approaches a value which is very close to 0.5.

以纯粹水晶割成空心圆柱,令圆柱之轴平行於晶体之光轴。于其里外二面,敷以铜质管状电极、置诸最简单之Pierce式振荡线路中,即能自生振动其振动之方式繁多,俱经吾人详细阐求,已在另文发表,茲不复赘。 各种振动方式中,以绕周振动发生最易。设圆柱内径与外径之比小于一去0.5极近之数,则绕周分三段而振动;设大于此数,则分六段而振动, 绕周振动之温度系数,亦经测定其法置圆柱於一特制之电炉中,连其二电极於振荡电路,令生振动。以所生高周率电流与一周率甚近之水晶片所生之高周率电流相干涉,由 是而生之低周率音差,复与一低周率振荡器相比较,若是则加热后圆柱振动周率之变化,可在该低周率振荡器上直接读之。 若是所得之结果绕周振动之温度系数,随其内外径之比而异。圆柱之绕周分三段而振动者,其温度系数常为正;内外径之比率增加,则温度系数减少。圆柱之线周分六段而振动者,其温度系数常为负;内外径之比率愈高,则温度系数愈大。惟适当三段振动告终六段振动肇端之时,则亘十馀度其周率几不以温度而变合二十馀度而平均计之其温度系数约为0.5×10~(-6)/C,小於寻常水晶片者五十馀倍。割制此种圆柱,并无繁难,且电极简单,装置便利以之控制振荡,校准周率,对无...

以纯粹水晶割成空心圆柱,令圆柱之轴平行於晶体之光轴。于其里外二面,敷以铜质管状电极、置诸最简单之Pierce式振荡线路中,即能自生振动其振动之方式繁多,俱经吾人详细阐求,已在另文发表,茲不复赘。 各种振动方式中,以绕周振动发生最易。设圆柱内径与外径之比小于一去0.5极近之数,则绕周分三段而振动;设大于此数,则分六段而振动, 绕周振动之温度系数,亦经测定其法置圆柱於一特制之电炉中,连其二电极於振荡电路,令生振动。以所生高周率电流与一周率甚近之水晶片所生之高周率电流相干涉,由 是而生之低周率音差,复与一低周率振荡器相比较,若是则加热后圆柱振动周率之变化,可在该低周率振荡器上直接读之。 若是所得之结果绕周振动之温度系数,随其内外径之比而异。圆柱之绕周分三段而振动者,其温度系数常为正;内外径之比率增加,则温度系数减少。圆柱之线周分六段而振动者,其温度系数常为负;内外径之比率愈高,则温度系数愈大。惟适当三段振动告终六段振动肇端之时,则亘十馀度其周率几不以温度而变合二十馀度而平均计之其温度系数约为0.5×10~(-6)/C,小於寻常水晶片者五十馀倍。割制此种圆柱,并无繁难,且电极简单,装置便利以之控制振荡,校准周率,对无线电通讯,裨益实多也。

 
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