求翻译：本文首先对曲柄摇杆机构的传动角相关特性进行了研究，并得到了其各杆件之间的相关关系，然后以杆长与摇杆摆角ψ等参量作变量，研究传动角函数。之后借以对机构在工作行程内的平均传动角的推导和研究，近似分析了机构的传动效率。是什么意思？

The transmission angle of the crank-rocker mechanism features and the correlation between its bars, and then put to the rod length and rocker angle ψ and other parameters as variables, the function of transmission angle. After in order to derivation and research institutions in the working stroke av

This article is first in the crank, rods, the drive angle related features have been studied, and had been its lever is the correlation between, and then to stick with long rocker swing angle should be such arguments as variables, research drive corner function. After the work of the agency which wi

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