dimensionless time

Introducing the dimensionless quantity Mo and Eo investigate the trend of break time.

引入无因次量Mo数和Eo数，研究了液膜破裂时间的变化趋势。

On the other side, the time of gas breakthrough decreases, the oxygen content of the breakthrough gas decreases and the displacement efficiency at gas breakthrough increases with the increase of the temperature when the dimensionless pressure is constant.

无因次压力一定时，随着温度的升高，气体突破时间缩短，突破气体含氧量降低，气体突破时驱油效率增加。

A physical model describing the heat and mass transfer processes of the evaporating thin film is set up and an evolution equation which shows the development regularity of dimensionless film thickness with time is obtained from the liquid vapor interfacial conditions.

论文对平面蒸发薄液膜的传热传质过程建立了物理模型，从汽液界面上的边界条件得到无量纲液膜厚度随时间变化的发展方程。

The infeasible solutions violating either logical relation constraints among activities or resources constraints can be avoided through introducing a dimensionless variable named extended float time rate and utilizing penalty function.

通过引入无量纲化的扩展工时率变量和罚函数，则可以避免求解得到不满足作业间逻辑关系或资源约束的非可行解。