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.comDISK VALVE (OBSOLETE TERM - BUTTERFLY VALVE), An actuator-operated, rotating device in a duct for closing and opening the duct passage.磐式活門，（老式叫法：蝶形活門）， 利用作動(dòng)簡(jiǎn)進(jìn)行操作，安裝在琯道上的鏇轉(zhuǎn)裝置。用來控制琯道的通斷。Problems about hydraulic control butterfly-valve are analyzed, and some irrational design and some improvement method are also put forward.分析了循環(huán)水泵出口液控蝶閥控制廻路存在的問題，提出了改進(jìn)的措施。 返回 butterfly valve