短语词组短語vent -hole 指孔cylinder vent hole 油缸放氣孔die vent hole 摸套shape of vent hole 開孔形狀Vent holeand overflow hole 排氣溢流孔Shell vent hole 罐壁通氣孔VH Vent Hole 排氣孔rotor copper vent hole 轉子銅線通風孔air vent hole 空氣孔;氛圍孔;氣氛孔 返回 vent hole