车辆喷漆前除油及酸洗处理；氧化钛、稀土元素的生产等。
In the production of oil and pickling process, Titanium oxide and rare earth elements of production, etc.
介绍了稀土元素的化学性质，在制备水处理絮凝剂方面的研究和应用情况。
The chemical properties of rare earth element are introduced, and the preparation of water treatment flocculants by using the rare earth is summarized.
并对稀土元素在化学热处理过程中的作用机理进行了探讨。
The article also investigated the action mechanism of rare earth elements in the process of chemical heat-treatments.
应用推荐