在曲柄摇杆机构中，当以摇杆为原动件时，工作一个循环以后，直观看出有两次死点位置出现。
In the crank and rocker mechanism, when the rocker acts as the driving link, there will be two dead points in one working cycle.
采用动坐标系建立了曲柄销强度计算的力学模型。
A mechanical model for calculating the strength of the crank pin on pumping units is established by a rotary coordinate.
介绍了复极矢量法的基本原理，并通过对曲柄滑块机构和直动滚子从动件平面回转凸轮机构的运动分析，介绍了复极矢量法在机构运动分析中的应用。
This article develops a software to simulate and analyze the movement of planar linkage with single degree of freedom by using the method of complex vector.
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