spring-loaded needle valve

阀门英语大全 ... spring-loaded check valve 弹簧止回阀 spring-loaded needle valve 弹簧加载针阀 ...

... ) spring loaded valve 弹簧加载式阀门 ) spring-loaded needle valve 弹簧加载式针阀 ) spring-opposed valve 弹簧加载阀 ...

... spring-loaded membrane 弹簧承力膜片 spring-loaded needle valve 弹簧承力针形阀 spring-loaded regulator 弹簧承力调节器 ...