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关注:1
2013-05-23 12:21
求翻译:At a pyrolysis temperature of 450◦C it is 98.6%, and at 490◦C it is 98.3% pure.是什么意思?![]() ![]() At a pyrolysis temperature of 450◦C it is 98.6%, and at 490◦C it is 98.3% pure.
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