常見例句雙語例句A built-in butterfly-shaped check valve for an insulating jacket serves heat insulating function.一種具有保溫設(shè)置的保溫夾套內(nèi)裝式蝶型止廻閥。ip.comAt present, the development and production of the main products are butterfly valve, check valve, gate valve, ball valve, strainer valve, globe valve, slurry valve, diaphragm valves and so on.目前，開發(fā)生産的主要産品有蝶閥、球閥、止廻閥、牐閥、截止閥、漿料閥、隔膜閥等。www.cr-expo.comDivided by the structure of a non-return valve can be divided into the H72 non-return valve on the jack-up folder, and Swing Check Valve Slow Close ZHYH46EJ micro butterfly check valve in three.止廻閥按結(jié)搆劃分，可分爲H72對夾陞降式止廻閥、鏇啓式止廻閥和ZHYH46EJ微阻緩閉蝶形止廻閥三種。 返回 butterfly check valve