When using sorbitic extractors, try to teach and explain packing method.

在使用沙氏提取，作试教，讲解安装方法。

The paper deals with the microstructrures and hight-temperatrure hardness of highchromium white cast iron with the austenitic and sorbitic matrices.

本文主论述了以奥氏及索氏为高铬白口铁组织和高温硬度。