短語詞組短語barrel printer drum printer 鼓式打印機Barrel tip drum sticks 琴棒hoisting barrel winch drum 絞車滾筒barrel switch drum switch 鼓形開關bare -barrel drum 光滾筒double barrel drum mixer 連續(xù)式雙滾筒再生攪拌設備double barrel drum 雙滾筒the barrel of a drum 鼓身 返回 barrel drum