The application of the hollow cathode discharge source in the trace amount element analysis is recommended.
并介绍了空心阴极光源在痕量分析上的应用。
Brass powder: three kinds of powder, type10, type20 and type30, can been offered. Rare earth element and other trace amount of alloy element can been added.
黄铜粉：分10、20、30黄铜粉，可添加稀土等微量合金元素，分为用于含油轴承及金刚石制品两类。
应用推荐