电成本增量 incremental cost: 增量成本,增支成本; 增支成本generating cost: 发电成本incremental benefit-cost ratio: 边际利益-费用比; 增量效益费用比incremental cost analysis: 增值成本分析incremental cost of capital: 当年增资费用; 资本的边际成本下载手机词典可随时随地查词查翻译