Used when jerkingmotion is needed in mechanical industry.
机械工业中，需要产生冲击运动的场合。
2
An injury to the cervical spine caused by an abrupt jerkingmotion of the head, either backward or forward.
鞭抽式损伤，头部受伤由于头颈突然猛拧的一个动作，或者向前或者向右，造成的对。
3
The jerkingmotion of one plate moving under the other caused a massive uplift of the seafloor, convulsing an area almost 200 miles long and 50 miles wide.