结论合理群体的小麦叶片会随太阳方位角和高度角的变化而变化。
Conclusion Wheat leaves of reasonable population varied with changes of solar position Angle and altitudinal Angle.
将GPS卫星高度和方位角预报值与实际跟踪值比较，进行了精度分析。
To compare the elevation and azimuth predictions of GPS satellite with actual tracking data, the error analysis has been made.
所有的地球同步卫星都在赤道上空35,785 km高度运行，相对于地面观测者来说，它们的方位角和高度角是始终不变的。
All geostationary satellites orbit the earth in the equatorial plane at a height of 35,785 km above the equator and stand still at a fixed azimuth and altitude for an observer on the earth surface.
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