%0 Journal Article %T Preface %A Stones %A Christopher %J Journal of Power and Energy Engineering 电力与能源 %D 2019 %R 10.1080/20797222.2019.1656865 %U http://www.scielo.org.za/scielo.php?script=sci_arttext&pid=S1445-73772019000100001&lng=en&nrm=iso&tlng=en