normally closed pneumatic diaphragm valve的意思|示意
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常闭式气动隔膜阀
normally closed pneumatic diaphragm valve的网络常见释义
常闭型气动隔膜阀 ... 常开型气动隔膜阀 normally opened pneumatic diaphragm valve 常闭型气动隔膜阀 normally closed pneumatic diaphragm valve 倒车灯开关（常闭型） BLS ...