zzcnhic 发表于 2017-7-8 00:12:03

ASTM G147 − 09

ASTM G147 − 09
Standard Practice for
Conditioning and Handling of Nonmetallic Materials for
Natural and Artificial Weathering Tests

admin 发表于 2017-7-9 14:16:13

谢谢您的分享,金币已奖励!
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