6.2 Automatic control of oil pressure system

6.2.1 As each of the oil pressure system,used as the servomotor oil source for butterfly valve,spherical valve and ring gate,is equipped with two oil pumps,the pumps shall be in a lead-lag control arrangement and the main and standby motors shall be autom ......（本文共 4399 字 ）     [阅读本文]>>