heat and mass balance

This paper calculates the heat and mass balance of sludge dryer, points out the advantages in using dryer to treat the sludge, and discusses several key points of the incineration system.

对污泥干燥机进行质量、热量平衡计算，指出采用干化技术处理污泥的优点。对焚烧系统应注意的几个问题进行了论述。

Fusion in a star's core produces heat and outward pressure, but this pressure is kept in balance by the inward push of gravity generated by a star's mass.

恒星核心中发生的核聚变产生热能与向外的压力，不过这份压力由恒星质量所产生的内向重力抵消了。

The models included empirical model, models based on heat transfer analogy and models based on differential mass balance.

这些动力学模型包括经验模型，基于热传递类推的模型以及基于微分质量平衡的模型。