查询词典 structure constant

Poisson's equation:In space where the source density is ρ, the Laplacian of a : potential U is 2 U = 4πρK, where is the operator del and K is a constant (gravitational constant in case of mass and gravitational potential).

泊松方程：在源密度为ρ的空间中，位场 U 的拉普拉斯算子为： U = 4πρK，。在米-千克其中为 del 算子，K 为常数(质量的万有引力常数和重力势)秒单位制中应去掉常数 4π。

The first set of tests was that mean stress p was constant while deviator stress q changed; the second set of tests was that q was constant while p changed.

做了2种应力路径下的三轴排水剪切试验：平均应力等于常数、偏应力变化的剪切试验以及偏应力等于常数、平均应力变化的剪切试验。

This paper described the design of constant current discharging device based on thermal sensitive element of PTC,including discharging battery at constant current and limiting current simulation load of charging sets.

文章介绍了一种采用PTC热敏元件设计的恒流放电装置，着重介绍了对蓄电池组的恒流放电和作为充电机的限流模拟负载的工作原理，实现对蓄电池恒流放电。

In the second method, the dielectric constant of solution was applied to substitute the dielectric constant of solvent.

对四种电解质水溶液中电解质扩散系数的计算表明：本文给出的两种改进方法的计算精度相当，与原来的计算方法相比较，与实验值的符合情况更好，应用的浓度范围也较宽。

It was shown that 1%Eu-PZT films have the highest Rayleigh constant, which indicates the minimal interaction of defect-domain walls and high contributions to dielectric and polarization. The high mobility of domain walls, combined with the obvious improved crystallization of 1%Eu-PZT results in the increase of dielectric constant and remanent polarization.

结果表明，1％Eu-PZT薄膜的瑞利系数最大，缺陷与畴壁之间的相互作用最小，畴壁运动对介电常数和极化强度的贡献最大，加之薄膜明显改善的结晶特性，使1％Eu-PZT呈现较高的介电常数和剩余极化强度。

The features of this dissertation are lie in: a The concept of"Influence Distance"was presented to quantitatively express"corner effect", systematicly studied on the influence of all factors on"influence distance". It could provide reference to angle designing from the view of heat treatment; b Deeply studied on the influence of shape factor to carbon concentration field. It could provide reference to gear designing from the view of heat treatment; c New model was set up to describe the two-dimensional concentration field of carbide dispersion carburizing. The shortcomings of"effective diffusion constant method"and"equilibrium constant method"were overcome in this model.

本文的特色在于：①提出了用"尖角影响距离"定量描述"尖角效应"的方法，并系统研究了各种因素对"尖角影响距离"的影响规律，从热处理角度为工件尖角部位的设计提供依据；②首次深入研究了齿轮的各种形状因素对浓度场的影响，从热处理角度为齿轮设计提供依据；③建立了能够更有效地模拟过饱和渗碳浓度场的数学模型，该模型克服了"有效扩散系数法"及"平衡常数法"的不足，与"最小自由能法"可互为补充。

Based on competition fitting model,the kinetic data including association rate constant,dissociation rate constant were obtained,which provided a new method for inhibitor sensitivity comparison and screening.

选取竞争性拟合模型拟合了抑制剂存在条件下的SPR数据，获得了抑制剂与酶的结合速率常数、解离速率常数及亲合常数等动力学数据，为实现D1蛋白酶抑制剂的生物活性筛选提供了新方法。

We have studied Aβ1-42 aggregation at different concentrations from 100 to 600nM, the results show that the association rate constant is strongly dependent upon the Aβ concentration, but the dissociation rate constant influenced by buffer has no salient change.

在不同浓度的Aβ1-42凝集反应中，发现结合速率常数ka随反应溶液中蛋白的浓度减小而明显地降低，解离速率常数kd主要受缓冲液的影响，并无明显的改变。

These above-mentioned reasons cause that the apparent association rate constant and the apparent dissociation rate constant obtained by the basic kinetic analysis are not the real constants of the specific binding reaction.

因此我们建立一套新的修正结合速率常数和解离速率常数计算方法，并利用修正过、与完整的模型进行反应曲线的模拟，其结果即获得相当大的改善。

Property 2 The constant factor in the integrand function can be taken out of the double integral, that is ,if k is a constant.

性质 2 被积函数前面的常数因子可以提到积分号前面，即，若k为常数。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"