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。

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

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通过摄像法得出了旋涡表面流体质点的运动轨迹、切向和轴向时均速度。

Moving path lines, tangential and axial average velocities of particles at the vortex surface are obtained by the photography method.

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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).

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