This paper introduced several methods for chromaticity measurement of wastewater from the pulp and paper industry, in which platinum-cobalt methods and dilution multiple methods were included.
介绍了可以用于制浆造纸工业废水色度检测的多种方法，包括各种铂钴比色法和稀释倍数法。
2
Researchers at Los Alamos National Laboratory have developed a platinum-free catalyst in the cathode of a hydrogen fuel cell that uses carbon, iron and cobalt.
作为阴极氢燃料调查的新型催化剂，它是由碳、铁以及钴三种原料组成。
3
From then on, the situation of China's long time dependence on import for nickel, cobalt and platinum family metals has been changed gradually.