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前言1977年4月,四机部三所、上海录音器材厂、764厂、上海玩具元件厂、辽无三厂、790厂、无锡无线电厂、南京大桥机器厂、大连无线电七厂、石家庄无线电十二厂、北京西城录音机厂、四机部四所等单位共同对部分国内外样机进行了测试和分析。这次分析,主要对象是盒式磁带(CASSETTE)录音机。因为在这方面,国内与国际先进水平的
Preface In April 1977, the three four-machine department, Shanghai recording equipment factory, 764 plants, Shanghai toy components factory, Liao Wu three plants, 790 plants, Wuxi Radio Factory, Nanjing Bridge Machinery Factory, Dalian Radio Seven Plant, Shijiazhuang Radio Ten Plant two, Beijing Xicheng audio factory, the four four units and other units jointly conducted some tests and analysis of domestic and foreign mock-ups. In this analysis, the main target is the Cassette tape recorder. Because in this regard, domestic and international advanced level