hand-operated hydraulic press

例句：

1. 1.The hand-operated hydraulic press is used for precision machining.
   手操作液压机用于精密加工。
2. 2.This machine can be operated manually or automatically, depending on the task at hand.
   这台机器可以手动操作或自动操作，取决于手头的任务。
3. 3. The engineer demonstrated how to operate the hand-operated hydraulic press safely.
   工程师演示了如何安全地操作手动液压机。