知识贝壳
知识贝壳
所属栏目：水轮机与水泵专业英语
Much equipment connected to a hydroelectric system is sensitive to frequency variation.Therefore, speed control of the system is a necessity. Regulating the quantity of wateradmitted to the turbine runner is the usual means of regulating and maintaining a ......（本文共 2780 字 ） [阅读本文]>>