unthreaded pipe未: did not; have not扣: button up; buckle管子: Guan Zhong端未车站: stab station扣管金属环: fastening pipes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:未车扣管子,即可在微信中查询翻译