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全国喷灌科技情报网于1986年10月21日至24日在北京密云水库管理处召开了第四次经验交流大会,有90个单位(其中网员单位73个)共144人参加,水利电力部杨振怀副部长、科技司郑泽民副司长、情报所吴舜龄副所长、农牧渔业部农机化局胡南强总工程师
The National Science and Technology Information Network on Spraying Technology held a fourth exchange of experience meeting at Miyun Reservoir Management Office in Beijing from October 21 to October 24, 1986 with a total of 144 participants of 90 units (73 of which were network operators). The Ministry of Water Resources and Electric Power Deputy Minister Yang Zhenhuai, Zheng Zemin, deputy director of the Department of Science and Technology, deputy director of the Information Office Wu Shun-ning, chief engineer Hu Nanqiang of the Agricultural Mechanization Bureau of the Ministry of Agriculture, Animal Husbandry and Fisheries