return headerreturn manifold返回: return; go back; revert; rec ...集: gather; assemble; collect管: pipe; tube集管: collecting pipe; collector; header pipe; manifold气体回集器: gas return collector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:返回集管，即可在微信中查询翻译
