ASTM-E0424-71(Reapproved 93)Standard test methods for solar energy transmittance and reflectance (terrestrial) of sheet materials.pdf
http://bbs.instrument.com.cn/Topic.asp?threadid=3613027
ASTM-E0424-71(Reapproved 93)Standard test methods for solar energy transmittance and reflectance (terrestrial) of sheet materials.pdf http://bbs.instrument.com.cn/Topic.asp?threadid=3613027
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