说明：  计算大气光谱透射率和平均透射率，可以分别计算水蒸气、二氧化碳、散射、雨雪造成的大气光谱和大气平均透射率。具体用法详见程序注释。
(Calculation of atmospheric spectral transmission rate and the average transmission rate can be calculated, respectively, water vapor, carbon dioxide, scattering, rain and snow caused the average atmospheric spectroscopy and atmospheric transmittance. Detailed procedures for specific usage notes.)