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1961年四月11日至13日捷克斯洛伐克在洛日额夫(Roznow)举行了电子器件基地会议——实际上现在已扩展成传统的电子器件工作者会议(每年一次,今年是第三次)
April 11-13, 1961 Czechoslovakia held an electronics device base conference in Roznow - it has now actually expanded into a traditional electronic device worker conference (once a year, the third this year)