ertical lift check alevertical lift check valve升降: promotion and demotion立式: vertical; upright止回阀: check valve; check-valve mou ...立式止回阀: ertical lift check ales; vertical lift check valves升降式止回阀: lift check ales; lift check valves下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:升降立式止回阀，即可在微信中查询翻译
