The paper studied the pre treatment for electroplating the surface of tungsten and technical conditions for chromate treatment, nickel and gold plating, determined the functions of cladding material.
研究了钨表面镀前处理及预镀铬、镍，然后镀金的工艺条件；
We have introduced a set of electroplating electroplating pen instrument portfolio, without professional technical staff, can easily repair the circuit board electroplating gold position.
我们引入了这套电镀仪电镀笔组合，不需专业技术人员，便可轻易修补线路板的电镀金位置。
An extremely poisonous white compound, KCN, used in the extraction of gold and silver from ores, electroplating, and photography, and as a fumigant and insecticide.
剧毒白色化合物，KCN，用于从矿石中提炼金银的过程中、照相中以及作为熏蒸剂和杀虫剂。
An extremely poisonous white compound, KCN, used in the extraction of gold and silver from ores, electroplating, and photography, and as a fumigant and insecticide.
剧毒白色化合物，KCN，用于从矿石中提炼金银的过程中、照相中以及作为熏蒸剂和杀虫剂。
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