slide actions造句

• Automatic steam stop-check angle-globe valves are best on medium-pressure steam service where the sliding action of the semi-plug disc assembly permits the valve to serve as a shut-off valve, a throttling valve and a check valve
  自动蒸汽截止止回阀和角式截止阀适用于中压蒸汽管道系统，此时半插入式阀瓣的滑动作用使得阀门能够起到关闭阀、节流阀和止回阀的作用。