边际收入等于边际成本 marginal revenue equals marginal cost
最近安装的系统倾向于有超量能力的趋势，而由于使用它们的即时边际成本似乎可以忽略不计，管理层常鼓励新的使用。
Recently installed systems tend to have excess capacity, and since the immediate marginal costs of using them seem to be negligible, management often encourages new uses.
基于外包动机的一般微观分析，展览服务外包的边界取决于外包的利益与成本的边际考量。
Based on the general micro-analysis of motives of outsourcing, the boundary of exhibition services' outsourcing depends on the marginal benefit and cost.
应用推荐