hydrant stem消火栓: fire hydrant; fire cock阀杆: valve stem; valve handle; va ...消火栓阀: hose valve消火栓阀门: hydrant valve螺栓阀杆: threaded valve stem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:消火栓阀杆，即可在微信中查询翻译
