挖方和填方的最小运输问题求解其实是一个土方平衡调配问题。
Solving the smallest transportation question of excavation and fill actually is a question of earthwork balance adjustment.
研究产量大于销量的产销不平衡最短时限运输问题。
This paper investigates an unbalanced production-marketing shortest-time transportation problem.
双电机拖动系统的出现，虽然使煤炭运输能力有了很大提高，但带来了电机功率不平衡问题。
Although the coal conveying ability is increasing with the appearance of double-motor driving system, it leads to unbalanced power problem of double motor.
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