短语词组短语ellipsoidal head lamp 椭圆形前大灯standard ellipsoidal head 标准椭圆封头semi -ellipsoidal head 半椭球形封头drum ellipsoidal head 锅筒椭圆形封头approximate ellipsoidal head 近似椭圆封头stamping of non -standard ellipsoidal head 非标封头冲压 返回 ellipsoidal head