zzcnhic 发表于 2017-6-28 16:18:33

ASTM G90 − 10

ASTM G90 − 10
Standard Practice for
Performing Accelerated Outdoor Weathering of Nonmetallic
Materials Using Concentrated Natural Sunlight

admin 发表于 2017-7-3 11:48:07

谢谢您的分享,金币已奖励!
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