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Notice: Undefined index: HTTPS in /www/wwwroot/mengmianren.com/wp-content/plugins/dessky-cache/dessky-cache.php on line 43 已知图a所示机构的尺寸和原动件以等角速度ω逆时针转动,其未完成的速度多边形和加速度多边形分别如图b和c所示 – 萌面人博客