escape valves造句

• Water system . core of manifold air-escape valve
  水系统.集中放气阀芯
• Speed control valve shuttle valve rapid escape valve
  梭阀快排阀
• China moved last year from being a massive importer of steel to being a modest net exporter providing a temporary escape valve for domestic producers
  去年，中国从一个钢铁进口大国转变为中等净出口国，为国内生产商提供了临时的“减压阀”。