... starting dog ==> 起动用凸块,起动爪 starting drill ==> 粗钻头 starting drive spring ==> 起动机驱动弹簧 ...
双语例句
1
This is single arm drill elementary starting up with a good stream line position. left arm moving? And you notice Lindsay keeps a good line looking at the bottom of the pool.
这是基本单臂划水训练，起始时就有很好的流线形。左臂移动？，保持好的流线，注视池底。
2
When a drill string moves upward or downward in a well, significant stress variations at the suspension point are caused by the starting and stopping of the motion.