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GB/T 28248-2012印制板用硬质合金钻头Cemented carbide drills for printed boards2022-06-10

SN 0182.1-1993海运出口电石包装钢桶使用鉴定规程Rules for the survey of usage of steel drum for packaging expo...2022-06-10

GB/T 17985.3-2000硬质合金车刀第3部分:内表面车刀Turning tools with carbide tips -Part 3:Internal tools...2022-06-06

泡沫碳化硅基整体催化剂用于强化甲烷绝热转化制合成气2020-10-02

Synthesis and pyrolysis of oligo(methylsilylene)-ethynylene polymer to near-stoichiometric SiC ceram2020-07-08

双乙烯基二乙二醇醚的制备2020-06-12

双乙烯基二乙二醇醚的制备2020-03-23