短語詞組短語insulating bulk -head 隔熱間壁bulk loader head 散裝裝車頭Bulk head elbow coupling 散裝頭肘耦合;大容量頭彎頭耦合;大部分胳膊肘耦合頭Gate bulk head 阻水閘門BULK HEAD UNION 穿板接頭gas tight bulk head 氣密隔墻bulk head line 碼頭線bulk head gate 檢修閘門plate bulk head 平面艙壁 返回 bulk head