hydraulically smooth region

例句：

1. 1. The design of the new car hasa hydraulic smoothness thatmakes it easy to drive.
   这款新车的设计具有液压光滑性，使得驾驶起来非常轻松。
2. 2. The hydraulic smoothness of the machine is crucial for itsperformance.
   机器的液压光滑性对其性能至关重要。
3. 3. The engineers worked hard to improvethe hydraulic smoothness ofthe machinery.
   工程师们努力工作，以提高机械设备的液压光滑性。