fine jack frame

例句：

1. 1. The fine jack frame is essentialfor lifting heavy objects.
   精细的千斤顶框架对于举起重物至关重要。
2. 2. The engineerused the fine jack frame to adjustthe angle of the machine.
   工程师使用精细的千斤顶框架来调整机器的角度。
3. 3.The fine jack frame was designed tobe lightweight and durable.
   精细的千斤顶框架设计为轻便且耐用。