hydraulic barking

例句：

1. 1. The hydraulic system is responsible for the smoothoperation of the machine.
   液压系统负责机器的平稳运行。
2. 2. The hydraulicpump is designed to provide a constant flowof oil.
   液压泵设计为提供恒定的油流量。
3. 3. The hydraulicvalve is used to control the flow offluid in the system.
   液压阀门用于控制系统中流体的流量。