运用变质量系统的基本原理，建立轴流脱粒过程中谷物运动的非线性动力学模型。
Based on the principle of a varied mass system, the non linear mathematical model of the crop mechanics for an axial threshing process was set up.
重点考虑后坐部分变质量、多体动力学方程与内弹道方程的耦合等因素。
Some important factors are considered, which include variable mass of recoiling parts and coupling between multi body dynamic equations and interior ballistic equations.
其中某些方程可用于研究变质量非完整系的相对运动动力学。
Some of the equations can be used to investigate the dynamics of relative motion of non-holonomic system with variable mass.
进一步针对轮式爬壁机器人，建立了非完整约束条件下的变质量系统分析动力学模型。
Then, the variable mass system dynamic model with nonholonomic constraints are developed for wheeled WCRs.
从变质量物体的动力学方程出发，推导出变质量系统的动能定理。
The kinetic energy theorem of mass variable system is derived from the kinetic equation of mass variable body.
从变质量物体的动力学方程出发，推导出变质量系统的动能定理。指明其实用价值，并举例加以说明。
The kinetic energy theorem of mass variable system is derived from the kinetic equation of mass variable body. The practical value of it is pointed out using an example.
在人体系统变质量力学模型研究基础上，开展了人体系统变质量块体动力学研究。
On the basis of study on varing-mass mechanical model of human body system, the varing-mass block-body dynamics of human body system are developed to study.
在人体系统变质量力学模型研究基础上，开展了人体系统变质量块体动力学研究。
On the basis of study on varing-mass mechanical model of human body system, the varing-mass block-body dynamics of human body system are developed to study.
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