知识贝壳
知识贝壳
所属栏目：水轮机与水泵专业英语
It is located at the exit of the nozzle preceding the runner buckets (Fig.2.2). Consequentupon a sudden rejection of load and a decrease in the demand of water, the needle quicklydecreases the area of flow. Otherwise the turbine would start racing. But if ......（本文共 1023 字 , 1 张图） [阅读本文] >>