Hole of nominal size connects with pneumatic operation organ,Threr is a square body protruding out which directly connects with the internal octagon of pneumatic operation organ.是什么意思_Hole of nominal size connects with pneumatic operation organ,Threr is a square body protruding out which directly connects with the internal octagon of pneumatic operation organ.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句