In other words, more and more people are treating used material so that it can be reused.
换言之，越来越多人在处理使用过的东西以便重新加以利用。
2
The chemical contents in the sand quartz has reached national standards of silicon raw material for plate glass production after combined treating by magnetic separation plus diluted acid dipping.
Introduce the characteristics and preparation methods of nanometer materials as well as its surface-treating methods in the polymer-nanometer material composite.