peak mesial point 尖峰半值点

trailing edge peak mesial point 后缘峰半值点

last transition peak mesial point 后援峰半值点

leading edge mesial point 上升半值点

last transition mesial point 下降半值点

first transition mesial point 上升半值点

first transition peak mesial point 前缘峰半值点

peak to peak mesial point 峰至峰半值点

leading edge peak mesial point 前缘峰半值点