The principle, method and case history how to predict the average uranium mass concentration in lixivium of in-situ leaching are introduced and the existing problems are discussed.
介绍了矿床采区浸出液中平均铀质量浓度的预测原理、方法和实例，并讨论了存在的问题。
A model for measuring aerosol mass concentration by an optical particle counter is presented using the conception of the average mass.
基于平均质量的概念，提出了粒子计数器测量悬浮颗粒物质量浓度的计算模型。
A model for measuring aerosol mass concentration by an optical particle counter is presented using the conception of the average mass.
基于平均质量的概念，提出了粒子计数器测量悬浮颗粒物质量浓度的计算模型。
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