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GB/T 28248-2012印制板用硬質(zhì)合金鉆頭Cemented carbide drills for printed boards2022-06-10

SN 0182.1-1993海運(yùn)出口電石包裝鋼桶使用鑒定規(guī)程Rules for the survey of usage of steel drum for packaging expo...2022-06-10

GB/T 17985.3-2000硬質(zhì)合金車(chē)刀第3部分:內(nèi)表面車(chē)刀Turning tools with carbide tips -Part 3:Internal tools...2022-06-06

泡沫碳化硅基整體催化劑用于強(qiáng)化甲烷絕熱轉(zhuǎn)化制合成氣2020-10-02

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

雙乙烯基二乙二醇醚的制備2020-06-12

雙乙烯基二乙二醇醚的制備2020-03-23