The movement of longitudinal-wave particle and the reflection of interface;
纵波质点的运动与界面的反射
A research of mechanical properties of two equal mass particles jointed by a rigid light bar;
刚性轻杆连接的质量相等的两质点球系统的力学问题研究
The frequency of an elastic rod connected to a particle;
与质点连接的杆横振动的频率特性
Based on the Poisson bracket and the discriminant of integral of motion,we prove the problem that the moment of momentum is the integral of motion when the mass point is affected by central force.
运用泊松括号,依据运动积分判别式,证明了质点受有心力作用时,其动量矩是运动积分的问题。
A theorem on kinetic energy for variable mass-point and formula of work of recoil internal forces are given and the reason of soft-rope query is discussed.
给出变质量质点的动能定理和一对反推内力作功的表达式，并由此给出软绳问题的正确解释。
For the requirement of spot welding quality in automobile industry,a fuzzy evaluation system for spot welding quality was developed and the software was designed.
针对汽车行业对点焊的质量要求,制定了一种点焊质量模糊评判方案,并进行了软件设计。
low-mass particle
小质量质点，轻质点
size and shape of colloidal particles
胶体质点的大小和形状
The motion of the particle is retrograde.
质点运动是衰减的。
energetic particle event
高能质点事件 -太阳活动
PICM (Particle in Cell Computing Method)
在格网中的质点计算法
A particle has no extent so that its position is a point.
质点没有广度因此它的位置是一个点。
Points P and Q represent two positions of the particle.
p点和Q点分别表示该质点的两个位置。
Numerical Analysis of Explosion/Impact Response Involved Multiple Materials Using the Material Point Method;
多相介质爆炸冲击响应物质点法分析
The Particle Law of Motion in the Resistance Air Dielectriuc;
有阻力的空气介质中质点的运动规律
The Condition of Changing the Barycentric Energy of Motion by the Work of the Endogenous Force in Mass Points Group;
质点组内力的功改变质心动能的条件
Let us compare the motion of any particle of the medium with that of a second particle to the right of the first.
让我们来比较一下媒质中任一质点和其右边另一质点的运动。
Material point method for dynamic analysis of saturated porous media (Ⅰ):coupling material point method
基于物质点方法饱和多孔介质动力学模拟(Ⅰ)——耦合物质点方法
The quality or character of sound.
音质音的质量或特点
A Survey of Studies on Focus;
焦点、焦点结构及焦点的性质研究综述
This is inferior in quality
这个质量比较差一点。
State Key Laboratory of Heavy Oil Research
重质油国家重点实验室
Am I some kind of nut?
我是不是有点神经质？
The beef is a bit high.
这牛肉有点变质了。