First, check the output of du on both the old and the new system (see Listing 13).
首先,检查du对旧的和新的系统的输出(请参见清单13)。
And so, we can immediately write this du and then we can write du for the universe, which is system plus surroundings is equal to zero.
因此,我们可以立刻写出这个等式,然后可以写出总的的,也就是系统加环境的du,等于零。
Using some theory and method of the operational research, this article shows the evaluating and administering models of the Karst water resources system in the southern part of Du-shan, Guizhou.
本文运用运筹学中的有关理论和方法,给出了贵州独山南部岩溶水资源系统的评价模型和管理模型。
du We can talk about du for the system well, w that's q plus w.
我们可以讨论它的,等于q加。
And so, we can immediately write this du and then we can write du for the universe, which is system plus surroundings is equal to zero.
因此,我们可以立刻写出这个等式,然后可以写出总的的,也就是系统加环境的du,等于零。
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