hydraulic press

名词 hydraulic press:

1. press in which a force applied by a piston to a small area is transmitted through water to another piston having a large area

1. A usually portable device for raising heavy objects by means of force applied with a lever, screw, or hydraulic press.
   千斤顶，起重机通过杠杆、螺丝钉或水的压力把重物提起的便携式装置