zzcnhic 发表于 2017-7-8 05:38:57

ASTM G197 − 14

ASTM G197 − 14
Standard Table for
Reference Solar Spectral Distributions: Direct and Diffuse
on 20° Tilted and Vertical Surfaces

admin 发表于 2017-7-9 14:18:47

谢谢您的分享,金币已奖励!
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