网络释义专业释义
lower valve spring collar 气门弹簧下环
Upper and lower valve body 上下阀体
lower valve body 下阀体
lower valve seat 下阀座
lower adjusting valve 下端调整阀
lower adjusting valve port 调整阀下口
main valve lower piston 主阀下活塞
双语例句
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Flexible disc springs automatically provide leak tightness by exerting pressure, which keeps the upper and lower valve sealing rings compressed at all times.
柔性盘簧始终使上、下阀门密封环处于受压状态，自动密封防漏。
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The lower valve core performs a switching function.
下阀芯起开关作用。
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The threads on the lower valve stem are in the wetted gas stream.
下阀杆上的螺纹是处在潮湿气流中的。
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