An air pressure altitude measurement system which took advantage of the relationship between air pressure and altitudeabovesea-level was studied and realized by MCU.
本文研究了一种利用大气压力与海平面高度的关系，使用单片机实现气压高度测量的系统。
2
Because the satellite's altitudeabovesealevel is known, the thickness of the ice above sea level can then be determined, allowing the overall thickness of the ice to be calculated.
因为该卫星的海拔高度已知，于是就能够确定海平面以上的冰层厚度，从而可以计算出冰层的总厚度。
3
Midui glacier, located in Yupu Township, is the lowest altitudeabovesealevel in the world. It was ranked by China National Geography Magazine as one of the top six most beautiful glaciers in China.