needle

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needleneedleneedleneedlevalve[英]ˈni:dlvælv[美]ˈnidlvælvn.针形阀,针状活门[例句]Closeventorb

needle
needle

needle
needle valve [英]ˈni:dl vælv [美]ˈnidl vælv
n.针形阀,针状活门
[例句]Close vent or bypass needle valve.
关闭排气或旁路针形阀.