The results show that the detectable stellar magnitude limits linearly increase with observing height and solar zenith angle.
结果表明：可探测星等极限值随观测高度和太阳天顶角的增加接近线性增加；
Transmission of Solar Radiation by Clouds over Snow and Ice Surfaces: a Parameterization in Terms of Optical Depth, Solar Zenith Angle, and Surface Albedo.
云和冰地表云对太阳辐射的传输：用光学厚度，太阳高度角和地表反照率参数化。
The reverse time of the crest motion depends on the smallest zenith Angle and on solar cycle.
运动的反向时间随太阳的最小天顶角的大小而变化，随太阳活动而变化。
The reverse time of the crest motion depends on the smallest zenith Angle and on solar cycle.
运动的反向时间随太阳的最小天顶角的大小而变化，随太阳活动而变化。
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