relative altitude的用法和样例：
例句
- This graph, produced using preliminary altimetry data from Cassini's radar instrument, shows relative surface heights on Titan.
这是用卡西尼号上的雷达探测出的初步测高数据制成的图表，显示出土卫六上地表的相对高度。 - Considering the fluidization quality of the system, proper selection of static powder bed height and powder outlet relative height was very critical.
在权衡流化质量的基础上，粉体静止料层高度和出粉口相对高度的选取至为关键。
