边际变化可以解释为一个小的比例中的加法或减法，对总数的影响。
Marginal change can be explained as a small addition or subtraction, in proportional comparison, to the total quantity of some variable.
在宏观经济理论以及在微观经济理论中有一个流行的概念是边际变化。
A popular concept that is used both in macro economic theory, as well as in micro economic theory is that of marginal change.
利用边际成本法计算附加成本，判断交易量的边际变化是否超过设备的最大容量对用户进行收费。
The additional cost is calculated using marginal cost method, in which the user's payment depends on whether the marginal change exceeds the maximum capacity.
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