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受一机部机床总局委托,广州机床研究所于一九八○年十二月在广州召开了电液比例复合阀鉴定会。参加会议的有研究、设计、制造单位、用户、大专院校及原电液比例复合阀联合设计组成员等14个单位的代表。会议对广州机床研究所研制的“34YB-H15L-ZZ”型电液比例复合阀样机进行了静态特性,动态特性的测试和零件精度拆检,审查
Commissioned by the Machine Tool Bureau of a machine department, Guangzhou Machine Tool Research Institute in December 1980 held in Guangzhou, electro-hydraulic proportional valve identification meeting. Participants at the meeting were representatives of 14 units including research, design and manufacturing units, users, universities and colleges, and joint electro-hydraulic proportional valve design teams. Meeting on the Guangzhou Institute of Machine Tool developed “34YB-H15L-ZZ” type of electro-hydraulic proportional valve prototype for static characteristics, dynamic characteristics of the test and the accuracy of parts inspection, review