precious-metal refiner贵金属精炼厂
precious scrap metal贵金属屑
precious s metal贵金属
precious s metal powder贵金属粉
precious-metal refinery贵金属精炼厂
precious metal powder贵金属粉
Badges of precious metal贵重金属微章;贵重金属徽章
Boxes of precious metal贵重金属盒
Teapots of precious metal贵重金属茶壶
One key challenge in the commercial development of homogeneous catalysis has always been the separation of precious metal catalyst from the product.
贵金属催化剂的分离与回收一直是均相络合催化工业化的一个关键问题。
参考来源 - 聚醚型亚磷酸酯及其在高碳烯烃氢甲酰化反应中的应用Third, IR method was used to measure the concentration of the solution, and a new calculation method for the treatment of IR-Data was developed. Catalytic complete oxidation technology and precious metal catalysts were used in this research.
对比考察了催化剂制备的浸渍—还原法和等体积浸渍法，前者因产生一定量的贵金属损失而不适于实际应用，实验采用后者制备催化剂。
参考来源 - 油烟的催化净化研究N-VAR（有变体名词） A precious metal is a valuable metal such as gold or silver. 贵金属