Journal of Hebei University of Water Resources and Electric Engineering ›› 2020, Vol. 30 ›› Issue (4): 72-75.DOI: 10.16046/j.cnki.issn2096-5680.2020.04.012
• Education and Teaching Research • Previous Articles Next Articles
PAN Ping-ping1,NIU Da-shan2,WANG Hong-yan1
潘平平1,牛大山2,王红艳1