The principle and technology elements of these two new technologies were researched.
研究了两种新技术的科学原理和技术要素。
Two new technologies were introduced to extract gold(silver)in one step from waste gold plated articles. The extracting equipment was developed and successfully used for the purpose.
介绍了两种能一次性从废镀金（银）件中提取金（银）的新技术，并用自行研制的高效金银直提设备，应用于不同废镀件的处理。
Two new technologies were introduced to extract gold(silver)in one step from waste gold plated articles. The extracting equipment was developed and successfully used for the purpose.
介绍了两种能一次性从废镀金（银）件中提取金（银）的新技术，并用自行研制的高效金银直提设备，应用于不同废镀件的处理。
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