前后运动 meaning in English
anteroposterior motion
seesaw motion
Examples
- An alternating back - and - forth movement
往复运动交互地前后运动 - String players practice moving the fingers of the left hand up and down , while drawing the bow to and fro with the right arm ? ? two entirely different movements
弦乐演奏者经常练习左手手指上下移动，而用于拉弦的右手则做来回地前后运动。 - Grinding feature is to use work piece for a slow - speed operation , and wheel spindle selects a high - speed revolution and offers a minor amount of in - feed to cooperate with mechanical spinde for forward and backward movement for finishing grinding jobs
研磨特性是利用工作物做慢速运转，而砂轮心轴采高速回转并给予微量进刀配合机械心轴前后运动完成研磨作业。