“pressure angle”的概念、定义、翻译、参考文献-科学参考

单词	pressure angle
释义	pressure angle Encyclopedia 工学齿轮传动释 pressure angle压力角在不计摩擦和构件的惯性的情况下，机构运动时从动件所受的驱动力的方向线与该力作用点的速度方向线之间的夹角。
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