以边际成本理论为基础，通过比较两个信用政策，研究增量收入与增量成本的计算方法，从而确定其增量利润。
By comparing two credit policies, the author researches the computing methods of incremental revenue and cost and defines the incremental profit.
这是由于发电商利润增量主要来源于输电权拥有者的费用。
The reason is that profit increment of power merchants comes from fees of power transmission right owner.
影响建筑企业工程项目利润值的主要变量有工程成本、追加价格、创优增量成本。
Major variables influencing profit of a project include project cost, additional cost and increment cost for better quality.
分别给出成本利润弹性、追加价格利润弹性、创优增量成本利润弹性的理论计算公式。
Theoretic formulas are given to calculate the profit elasticity of the cost, additional cost and increment cost.
在工程项目中，目标利润分为正常利润和经济利润，分析工程成本利润弹性、追加价格利润弹性、创优增量成本利润弹性对经济利润的影响。
In project evaluation, target profit is divided into normal profit and economic profit. Impact of profit elasticity of the cost, additional cost and increment cost on economic profit is analyzed.
在工程项目中，目标利润分为正常利润和经济利润，分析工程成本利润弹性、追加价格利润弹性、创优增量成本利润弹性对经济利润的影响。
In project evaluation, target profit is divided into normal profit and economic profit. Impact of profit elasticity of the cost, additional cost and increment cost on economic profit is analyzed.
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