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市话容量(万门)长途业务电路(万路)程控化比例(%)1978174.9 2 .1 O1985366。5 3 .8 3 .01990826 1 1 .2 34.819911039.6 15.1 53 .919921339.4 23。1 G7.落中国通信发展的几个数据@谭生树
Local Capacity (10,000) Long-distance Business Circuit (10,000 Road) Program-controlled Ratio (%) 1978174.9 2 .1 O1985366.5 3 .8 3 .01990826 1 1 .2 34.819911039.6 15.1 53 .919921339.4 23.1 G7. Several data communications development @ Tan Shengshu