reducing bend变: become different; change径: footpath; path; track弯头: angle head; elbow; elbow pip ...变径弯管: reducing elbow大半径弯头: long radius elbow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:变径弯头，即可在微信中查询翻译
