angular tube折: roll over; turn over角管: cornue折角: bevel; break angle; break corner; chine; dog-ear; knuckle接角管: angle pipe直角管: quadrature tube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:折角管，即可在微信中查询翻译
