The damage status of melting pond in zinc rectity lead tower liquation furnace is introduced, and the improving prosess and effect are explained.

概述锌精馏铅塔熔析炉熔池损坏状况，介绍其改进过程及运行效果。

To determine the selenium distributed characteristic in bean curd production process by soybean as the material, the content of selenium in products from this prosess was determined and studied.

为确定以不同硒含量的大豆为原料生产豆腐过程中硒分布特性，用石墨炉原子吸收分光光度法对该过程中各种产物的硒含量进行了分析研究。