查询词典 force constant

Because the object and parts of the microcosmic particle accord with the definition of charge group, it holds that electron does circular motion by the force of charge group and the constant is Planck constant.

因为物体和部分微观粒子符合电荷群定义，所以认为电子是以电荷群的作用力为向心力做圆周运动，并且常数是普朗克常数。

The results of conversion show that the serious disc must be rejected because its reliable L-HCCF life is greatly less than an overhaul period. Finally, the load distribution of centrifugal and vibration force on labe is derived. Using two method, load on the crack labe gradually reducing and keeping constant with the crack propagation, a crack propagation analysis of fir-tree slot is carried out, and the calculating L-HCCF crack propagation life of slot on the unload method, which is nearly 3 times longer than that on constant method, is 20 times shorter than the pure low cycle life, and agree well with the experimental's.

最后，分析了离心力载荷和振动载荷在榫齿上的分布，进行了榫槽榫齿的有限元计算；提出了枞树型榫槽的卸载概念，并按带裂纹榫齿上的承载随裂纹增长而逐步减少和始终保持不变两种处理方法，进行了复合疲劳裂纹扩展及其寿命计算，由计算得出卸载下复合疲劳裂纹扩展寿命较单纯低周疲劳寿命下降二十多倍；按卸载处理的疲劳裂纹扩展寿命是按恒载处理的三倍多，前者与试验吻合，而后者则偏差较大。

An extra force is produced using the piecewise-constant MS model during the segmenting. In each time step, the additional force is added to reinitialize the level set function, advance the speed of the curve evolution. Otherwise, a nonlinear function Ψ is introduced to instead of u+ and u-for edge preserving in MS model.

该方法在分割过程中利用分段常数MS模型产生一种驱动力，在每个时间间隔加入这种驱动力来推动水平集函数的进化，提高曲线演化速度；另外，通过在MS模型中引入一个非线性函数Ψ代替u+和u-实现保边。

But because the laws, that are at once, and in a short time made, have a constant and lasting force, and need a perpetual execution, or an attendance thereunto; therefore it is necessary there should be a power always in being, which should see to the execution of the laws that are made, and remain in force.

但是，因为立即并短期内可以制定出来的法律具有恒定和持续的强制力，需要持续的执行或照料；所以，有必要设置一种常在的权力，负责察看已制定的并仍具强制力的法律的执行。

The atomic force microscope invented by Binning et al in 1986 possesses very high spatial resolution. It measures the atomic force through a micro-cantilever of very little spring constant .

原子力显微镜是1986年由诺贝尔奖金获得者Binnig等人发明的一种分辨率极高的表面分析仪器，它通过检测一根弹性常数极小的微悬臂梁在样品表面。。。

The method can be adopted further to measure the micro-deflective force of the micro-cantilever when in deflection and then the force constant of the micro-cantilever can be measured combining with measurement of deflective displacement.

进一步用该方法来测量微悬臂偏转时的微小偏转力，结合偏转位移的测量，测得微悬臂的力常数。

The speed-sensorless vector control and the identification of motor parameters in this paper are the two novel research of vector control.Using asynchronous machine's mathematic model in three-phase static reference frame, this paper has derived it's mathematic model in two-phase static reference frameand in two-phase rotating reference frame, and got the coordinate transformance formulus based on the constant magnetic force and power force, by compared different field orientation methods, we can find that field orientation at rotor field can realize the decoupling of the stator current flux component

无速度传感器矢量控制和电机参数辨识是矢量控制的两个新的研究方向，本文利用异步电机在三相静止坐标系下的数学模型推导出两相静止坐标系、两相同步旋转坐标系下的数学模型，根据磁动势守恒和功率守恒的原则，得出各坐标变换公式；通过不同磁场定向方式的比较发现，异步电机按转子磁场定向时定子电流励磁分量和转矩分量可以比较方便地实现解耦。

As the temperature of rat aorta was raised, the vasoconstrictive force and vasoconstrictive speed increased, and the effects of norepinephrine on vasculature were raised. The results suggest that the constant X1 for vasoconstrictive force is a factor sensitive to temperature.

认为NE引起的血管收缩张力的大小，显然也处于温度的影响之下；随着温度的升高，血管收缩张力变大，收缩速率变快，NE对血管的作用效力增强；且张力因子X1是温度敏感因子。

This paper describs the requirements of testing members to be nominal, the precedure of exerting load upon the tension rod, specific cautions and the effect upon the construction, for the application of the shear type constant force tester to measure initial tensile force of the rod in the wharf construction for the Port of Tangshan .

阐述在唐山港码头施工中应用剪式恒力仪测定拉杆初拉力时对标定试件材料的要求、拉杆施力的过程和须注意的具体问题以及施工效果。

The structure is under aerodynamic force, mass force and elastic force, the amplitude of which is increasing on and on.

结构在气动力、惯性力和弹性力耦合作用下，出现的幅度不断增加的振动现象。

Looking to bounce back from defeat against Cesena last weekend, the Calabrian boss will be sticking to his tried and tested 4-3-3, with Lopez and Sedivic joined up front in Giampaolo's absence by either Nanni or Plasmati.

鉴于上周末对切塞纳的比赛中反败为胜，这支南方球队将会更坚持其一贯而有效的4-3-3阵型，洛佩斯和塞德维奇将取代受伤缺席的詹保罗，和纳尼或者帕斯马蒂中的一个搭档锋线。

Meanwhile, their exposure to the more freewheeling ways of the West broadened dramatically.

另外，西方较自由的生活方式对年轻人的影响增大。