[网络] 边际电能量成本 incremental costs: 边际成本; 增量成本, 增值成本incremental costs analysis: 增量成本分析; 增支成本分析incremental costs of capital: 当年增资费用incremental costs saving: 增支成本节约额incremental fixed costs: 增值固定成本下载手机词典可随时随地查词查翻译