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我们自82年开始试制集成电路载波电话以来,针对实际使用中存在的问题,对原线路作了一些改进(原线路见本刊84年第4期),使整机性能有所提高。
Since we started trial manufacture of integrated circuit carrier telephones in the year 82, we have made some improvements to the original circuits (the original lines are published in Issue 4 of 1984) for the problems in actual use, which has resulted in the improvement of overall performance.