reducing tee变: become different; change径: footpath; path; track三通: triplet; tee; tee joint; wye ...大口径三通: wide tee等径三通管: straight tee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:变径三通,即可在微信中查询翻译