【作者单位】1 Dept. of Accounting, Xinzhou Teachers University, Xinzhou, 034000, China; 2 Dept. of Economics, Taiyuan Normal University, Jingzhong, 030619, China; School of Economics and Management, Taiyuan University of Technology, Jingzhong, 030619, China; School of Economics and Management, North University of China, Taiyuan, 030051, China; 3 Dept. of Petroleum Engineering, Colorado School of Mines, Golden, CO, 80401, USA
【年份】2020
【卷号】Vol.190
【ISSN】0360-5442;1873-6785
【摘要】 Highlights • We measured the energy efficiency by using coal consumption instead of energy consumption. • Undesirable outputs including environmental pollution and gas emissions were considered. • Overall, energy efficiency showed a good development ...
