delivery manifold干: trunk; main part管: pipe; tube泵水干管: pumping main给水干管: down main; main supply conduit; water main给水干管阀: water main valve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:进水干管，即可在微信中查询翻译
