例如，某地区的出行发生量(Trip Generation)可以用根据土地利用得到的人口函数来表示，并且只要得到出行发生量，就可以由目的地选择概率的推算值计算出地点之间的交通量。
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煤气发生量与消耗量不平衡是煤气计量普遍存在的问题。
It is the general problem consisting in the gas measure that gas' total outputs and consumes lost balance.
通过对火灾时烟气发生量及烟气流场的分析，建立了舞台空气幕计算的数学模型并求数值解。
Based on an analysis of the predicted volume and flow field of the smoke generated in case of fire, sets up a mathematical model and works out its numerical solution.
的预测、预报和防治实验，能准确地预测松毛虫的发生期和发生量，并能有效控制松毛虫的危害。
The result showed the lamps could exactly forecast the occurrence period and amount of the pest and effectively control the damage caused by the pest.
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