质点

Despite their many differences, there is a remarkable degree of homogeneity among them.

他们的差异点虽多，但其间亦有极大的同质点。

Based on wave propagating in three directions of elastic foundation, vibrating displacement could be assumed to be in three forms along three directions. Hooke's law and theory of waves were adopted to deduce the formula of coupled viscous boundary. The coupled viscous boundary could be applied in finite element method.

根据波在地基的3个方向都可以进行传播的特点，假定了地基中质点沿3个方向的振动表达式，通过胡克定律和波动理论，推导了弹性地基中三维动力问题的耦合粘性边界的公式。

As the condition of super-elasticity happening,a velocity constraint inequality is built.If the mass's velocity dissatisfies the inequality,the authors need to restrict and modulate the velocity,avoiding the super-elasticity.

该方法建立了一个速度约束不等式，作为超弹性现象是否发生的判断依据；并对不满足约束条件的质点速度进行约束调整，进而避免了超弹性现象的发生。

In the limit, as the component point masses become "infinitely small", this entails

在极限上，当组成质点趋近于"无限小"时，将需要求出两

We argue that the wave-particle duality of microscopic particles perhaps results from the intrinsic energy conservation and conversion inside the particles. We point out that there\\\\\\\s a critical flaw both in electromagnetic field theory and Coulomb\\\\\\\s inverse square law.

在详细分析了宏观质点简谐运动的基础上，仍以能量守恒和转换定律为出发点，阐明微观粒子的波动过程必须时刻满足能量守恒定律，指出传统的电磁场理论和库仑定律都存在瑕疵。

This paper proposed an implicit technique based on the Jacobi's iteration method. The theoretical demonstration and analysis show that the proposed method meet both the real-time and the stability requirement well. The new method which can update stably the state of n mass points with the time complexity of O has great advantages over the existing implicit integration methods.

本文提出了一种基於雅可比迭代法的隐式数值积分算法，通过理论证明和分析，该算法稳定地更新n个质点的状态所需时间复杂度为O，较已有的隐式积分算法有了很大的改进。

The relation between Lagrange multiplier of impact and impact force was obtained on the basis of theorem of motion of mass center.

在子结构离散的柔性多体系统的动力学基础上，由质点系统的质心运动定理建立了与接触碰撞有关约束的Lagrange乘子和撞击力的关系。

The magnification of lateral acceleration for each particle in wall is 1~1.88 under HACHI＿EW loading, and 1～2.78 under HACHI＿EW loading.

墙内各质点对ELCE＿NS地震波的水平加速度放大倍数为1～1.88倍，对HACHI＿EW地震波的放大倍数为1～2.78倍。

Therefore, based on the velocity composition law of particle movemen t, a mathematical model and its algorithm for the locating error are firstly est ablished to analyze the linear dimension.

为此， 基于质点运动的速度合成原理，首先建立了线性尺寸的定位误差通用模型及其算法。

The article deduces the general expression for the recovery coefficient in solution of dynamic collision, based on on-dimension face-to-face collision and law of particle momentum conservation.

从一维正碰着手，应用质点动量定律，推导出力学碰撞问题中恢复系数的一般表达式，为我们正确理解恢复系数，解决与此相关的问题提供理论支持。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。