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《中图法》的使用方法（续完）卞宣（本刊编辑部）５．５．９ＴＮ无线电电子学、电信技术本类概括为两部分：ＴＮＯ／７无线电电子学基本理论、技术和器件制造；ＴＮ８／９９电子技术在电信方面的应用，包括各种电子设备的设计和制造。１）总论无线电技术的著作查找ＴＮＯ...
5.5.3TN Radio Electronics, Telecommunications Technology This class is divided into two parts: Basic Theory, Techniques and Devices of Radio Electronics for TNO / 7 Manufacturing; TN8 / 99 electronic technology in telecommunications applications, including the design and manufacture of various electronic equipment. 1) The general radio technology works to find TNO ...