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1·In this paper, the instantaneous center method for the redaction of masses and forces is proposed.

本文提出了质量和力等效转化的速度瞬心法。

2·To have to be involved the method of instantaneous center, for the teaching at motion of plane of rigid body.

对刚体的平面运动的教学，必涉及“瞬心法”，而现行教材均只论速度问题。

3·Instantaneous center of rotation-velocity vector method is the integration of instantaneous center of rotation analysis and velocity vector method.

将瞬心分析与速度矢量法相结合的瞬心—速度矢量法较转化机构法更为清晰、明了、直观。

4·Generally, base point method is used when we analyze the acceleration of a paint in the plane figure, we seldom use the instantaneous center method.

分析平面图形上点的加速度问题一般采用基点法，很少采用瞬心法。

5·Two methods of establishing acceleration instantaneous center place, namely, a round of outside connection method and a formula method are described.

提出了求加速度瞬心的两种方法，即外接圆法和公式法。

6·The two different definitions of the axis of rotation are discussed. One is the definition of the CIRP text and the other is that of the instantaneous center of rotation.

评论了机床主轴转轴的两种不同定义，其一是CIRP统一文件的回转轴线定义，另一是瞬时回转中心线的定义，指出这两种定义均有不妥之处。

7·There from it is used to obtain the principles of the angular of momentum of the system of particles with respect to its cenier of mass and instantaneous center of velocity.

采用简捷的方法推导质点系相对于任意动点的动量矩定理，并由此引出质点系相对于质心的动量矩定理和质点系相对于速度瞬心的动量矩定理。

8·According to theorem of motion of centre of mass and theorem of moment of momentum about centre of mass, we derive the theorem of moment of momentum about instantaneous center of rotation.

从质心运动定理和相对质心的动量矩定理出发，导出了相对瞬心的动量矩定理。

9·Based on the conception of instantaneous motion center, a new virtual vibration system for dynamic balancing measurement is proposed.

根据瞬时运动中心的概念，提出一种全新的动平衡测量虚拟振动系统。

10·The instantaneous field of view of head - up display emended 6 circle which radius have be know and center of circle is commanded.

平视显示器的瞬时视场由半径大小可知、圆心坐标可控的6圆交接而成。