polypneustic lobe

• 多孔气门瓣

polypneustic lobe的用法和样例：

例句

1. As the camshaft rotates, the lobe, or high spot of the cam, pushes against parts connected to the stem of the valve.
   当凸轮轴旋转时，凸轮凸起的或者高点的位置，推动气门座。