direct switching system
direct switching system
[电信英汉词典]
direct switching systemn.直接交换系统
是什么意思，direct switching system的解释，direct switching system的翻译
[广播英汉词典] direct switching system
direct switching system
[电信英汉词典]
direct switching system是什么意思，direct switching system的解释，direct switching system的翻译
[广播英汉词典] direct switching system