ICS03.220.20CCSR1121辽宁省地方标准DB21/T4091—2025城市公共汽电车运营碳排放量测算技术规程Technicalstandardforcarbonemissionaccountingofurbanbusesandtrolleybusesoperation2025-01-07发布2025-02-07实施辽宁省市场监督管理局发布DB21/T4091—2025I目次前言..................................................................................II1范围..................................................................
