常見(jiàn)例句雙語(yǔ)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)裝式蝶型止回閥。ip.comDISK VALVE (OBSOLETE TERM - BUTTERFLY VALVE), An actuator-operated, rotating device in a duct for closing and opening the duct passage.盤(pán)式活門(mén)，（老式叫法：蝶形活門(mén)）， 利用作動(dòng)簡(jiǎn)進(jìn)行操作，安裝在管道上的旋轉(zhuǎn)裝置。用來(lái)控制管道的通斷。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回路存在的問(wèn)題，提出了改進(jìn)的措施。 返回 butterfly valve