Shift, internal injury, breaking, bad imbedded in rock, as well as short anchorage distance etc.

无桩尖管桩锤打过程易造成管桩移位、内伤、断桩、嵌岩差、持力层锚固长度小。

youdao

Simultaneously, as the moving tracks of the movable contact are the same, the maximum contact distance can be reached no matter when in breaking or in repulsion.

同时，由于动触头的运动轨迹都是一样的，不管是在分闸时还是在斥开时，都可以达到最大开距。

youdao

By comparison, Jamaican sprint hero Bolt was clocked at 3.78 for the same distance on his way to gold in a record-breaking 100 meters time at the 2008 Beijing Olympics.

CNN: Better than Bolt? The fastest men on ice