本文提出质点和质点系(绝对运动和相对运动)质量加速度矩定理。
This paper proposes the theorem of moment about mass acceleration of the particle and the system of particles (absolute motion and relative motion).
通过计算质量分布均匀的球壳对一质点的引力，验证了平方反比关系的重要结果。
The important result of the relation of the inverse ratio of square through calculating the gravitation of a ball shell with uniformly-distributed mass on a particle.
通过对两特性参数的影响因素质量和刚度的分析，得出了一些有益的结论，对深入理解多质点弹性体系的地震反应有很大帮助。
With the analysis of the influent factors of the parameter, useful conclusions was given, which can help to understand the seismic response of multi-mass elastic system.
对受约束的两体问题在其自由方向上引入折合质量，并由此导出了受约束两体问题中质点的折合动能，同时也给出了处理受约束两体问题的一种简便方法。
The reduced kinetic energy is discussed using the reduced mass of the constrained two bodies. Then a simple method to solve the constrained two bodies problem is presented.
VMIB模型认为：固体材料在微观尺度上是由离散的随机分布的质点(带有质量的微粒)组成。
From the view of VMIB, the solid materials was consisted of discrete and random mass particles.
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。
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.
单独考虑气动肌肉的质量项并在动力学推导中将其看成沿圆柱体均匀分布的质点系，利用拉格朗日方程建立了气动肌肉质量项动力学模型。
This paper aimed to achieve the dynamics model of mass terms for PMAs. In the modeling, PMAs were considered as a system of particles which were distributed uniformly along a cylinder.
单独考虑气动肌肉的质量项并在动力学推导中将其看成沿圆柱体均匀分布的质点系，利用拉格朗日方程建立了气动肌肉质量项动力学模型。
This paper aimed to achieve the dynamics model of mass terms for PMAs. In the modeling, PMAs were considered as a system of particles which were distributed uniformly along a cylinder.
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