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在学习无产阶级专政理论热潮中,为了满足国民经济发展和外贸出口的需要,我厂根据上海市机电一局新产品试制计划,对φ50缸径微型空气压缩机系列,进行了三种规格四种产品的设计试制,一九七五年三季度完成了样机的试制、性能制定及500小时型式试验。 一九七五年十一月十七日至十八日,我们对新产品进行了工厂扩大鉴定,上海重型机械制造公司、中国机械进出口公司上海分公司等十六个单位参加了鉴定会议。鉴定认为,新产品主要性能达到了《一般用往复活塞式微型空气压缩机型式和基本参数》（JB1407-74）的规
In order to meet the needs of the national economy and the export of foreign trade, in order to meet the needs of the development of the national economy and the export of foreign trade, according to the trial plan of the Shanghai Municipal Bureau of Mechatronics-one new product prototype, the φ50 bore micro-air compressor series was subjected to three specifications and four products Trial design of the prototype was completed in the third quarter of 1957. The performance test and 500-hour type test were completed. From November 17 to January 18, 1975, we expanded our factory to appraise new products. Shanghai Heavy Machinery Manufacturing Co., Ltd. and China National Machinery Import and Export Corporation Shanghai Branch attended the conference. Identification that the main performance of new products reached the “general use reciprocating piston miniature air compressor type and basic parameters” (JB1407-74) regulation