卸压单向阀check valve: 【机械工程】止回阀,单向活门。 decompression valve: 减压阀; 减压活门; 泄压阀check valve; back-pressure valve: 单向阀control valve to check valve pipe: 控制阀至止回阀管non-return valve(check valve): 逆止阀下载手机词典可随时随地查词查翻译