蝴蝶閥 disk arm: 磁盤取數(shù)臂valve arm: 電子管臂; 閥桿; 氣閥搖臂; 氣門搖臂disk valve: 盤形閥; 網(wǎng)狀閥; 圓板閥; 圓盤閥valve disk: 閥盤disk colter arm: 圓盤犁刀支架下載手機(jī)詞典可隨時隨地查詞查翻譯