基本解釋[毉葯科學(xué)]半開(kāi)放活瓣詞組短語(yǔ)短語(yǔ)semi -open without valve system 無(wú)活瓣性半開(kāi)放系統(tǒng)semi-open valve更多詞組專業(yè)釋義毉葯科學(xué)半開(kāi)放活瓣