求翻译：在月任务输量一定的情况下，月输油计划不同，完成此月输油任务的能耗也不同，存在着一个最优的流量组合，使得该月管道的能耗最小。其数学模型如下：是什么意思？

In the task input monthly amount of certain circumstances , different monthly oil plan , oil consumption to complete this task is different month , there is an optimum combination of flow rate , such that the minimum energy consumption of the month pipe .

The task, the amount of, the month fuel scheme is different, and this is done, the oil of energy consumption are also different, so there is a maximum flow, so that the pipe, the energy consumption is minimal. The mathematical models are as follows:

Loses in quantity certain situation in the month duty, the month oil transfer plan is different, completes this month of oil transfer task the energy consumption to be also different, has a most superior current capacity combination, causes this month of pipeline the energy consumption to be smalles

In certain circumstances of mission throughput, oil transportation plans, complete this task of oil transportation energy consumption is different, there is an optimal combination of flow, making the monthly minimum energy consumption of pipe. The mathematical model is as follows:

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