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本文对《中图法》第 3版、第 4版中的无线电电子学、电信技术类目进行了比较 ,总结出第 4版对无线电电子学、电信技术类目修订的几个特点
This article compares the categories of radio electronics and telecommunications in the 3rd edition and the 4th edition of the Chinese Library Classification, and summarizes the characteristics of the 4th edition of the revision of the categories of radio electronics and telecommunications