Based on the and analysis results , the source apportion was calculated by chemical mass balance model.

应用受体模式的化学质量平衡法对玉溪市中心城区大气颗粒物的来源进行解析.

The applications of mass balance equation and mixing model along with the verification of diet turnover time are important steps to validate related ecological process;

同位素转化时间的确定、质量平衡方程和混合模型的应用则是验证相关生态问题的重要步骤；

The pressure in this model is determined by mass balance, energy balance and phase equilibrium.

该模型中压力由物料平衡 、 热量平衡及相平衡联解求得.

By the calculation of mass balance, thermal balance and crystal population balance, the influence function of operation parameters on the CSD was established.

结合粒数衡算，进行了模型计算，得到结晶粒度与操作参数的关系。

Mass balance of Antarctic ice sheet and mean sea level are the factors in global change study.

南极冰盖的物质平衡和海平面变化是全球变化研究的一个重要内容。