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33二甲基44联苯二甲酸 我国对有毒有害物质的分类
聚氨酯 专业英语词汇 thermoplasticPU(TPU)热塑性聚氨酯3,3-tolidine-4,4-diisocyanate(TODI)(3,3-dimethyldiphenyl-4,4-diisocyanate)3,3-二甲基联苯...
聚氨酯 专业英语词汇 thermoplasticPU(TPU)热塑性聚氨酯3,3-tolidine-4,4-diisocyanate(TODI)(3,3-dimethyldiphenyl-4,4-diisocyanate)3,3-二甲基联苯...