Unclamp the shaft from the vise and slide off the top bearing 松开老虎钳上的轴，将顶部轴承移出。
2.
The silent earthquakes may then take place when a batch of fluid from the slab is working its way up ? as the fluid passes , it will unclamp the fault zone a little bit , perhaps allowing some slow slip 这是因为当水通过断层带的片刻，会微微地摇撼一下断层带，这或许就是引发轻微滑动的原因。
