• 2021-04-14
    图示机构中,已知O1A=O2B。当O1A//O2B时,O1A杆与O2B杆的角速度和角加速度分别为w1,a1与w2,a2,则该瞬时____。http://image.zhihuishu.com/zhs/onlineexam/ueditor/201812/a5cc43451aa8403199a4d9803e3eae30.png