slide action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。