我们需要学会如何面对压力 » We need to learn how to deal with stress 技术料金 » Technical material gold 他们可以在网上寻找质料吗？ » They can look for material on the Internet do?
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The gold standard material of high grade ore was prepared in this Institute. It was approved and assigned as the first class standard material by the state Supervision Bureau of Technical Quality.
研制了高品位矿石金标准物质，并已获国家技术质量监督局批准为国家一级标准物质。
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；
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