三通用英语怎么说

弯头英文Elbow三通英文 tee 异径管英文reducer大弯英文big bend 管帽英文 cap

三通一达Three links 三通 [词典] [机] triplet; tee; “three exchanges”exchanges of mails, trade, air and shipping services; the opening of postal, aviation and navigational services and commercial interflow; [名] （政） Three Direct Links (direct links in post, transportation and trade between the Chinese mainland and Taiwan); [例句]做好施工现场布置和三通一平工作管理。Make scene arrangement and three supplies and one leveling.

"Three direct links" ", the "two whatevers" " ", ""five stresses and four points of beauty"" ", three representative "可怜的10分拿来‘‘‘‘‘‘