1. marginal profit; marginal incomeFinance, See also 限界利潤
Wikipedia definition
2. Contribution marginIn cost-volume-profit analysis, a form of management accounting, contribution margin is the marginal profit per unit sale. It is a useful quantity in carrying out various calculations, and can be used as a measure of operating leverage. Typically, high contribution margins are prevalent in the labour-intensive tertiary sector while low contribution margins are prevalent in the capital-intensive industrial sector.
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