“public switched telephone network，PSTN”的概念、定义、翻译、参考文献-科学参考

单词	public switched telephone network，PSTN
释义	public switched telephone network，PSTN Encyclopedia 工学公共交换电话网释 public switched telephone network，PSTN公共交换电话网由国家电信部门统一管控的，面向所有人使用的全球语音通信公共网络系统。工学通信系统释 public switched telephone network，PSTN公用交换电话网进行交互型话音通信、开放电话业务的公众网。是一种全球语音通信电路交换网络。
随便看	surveillance society survey survey and evaluation of mineral resources survey and interview Survey and Planning of Rangeland survey catalogue survey control network survey design surveyed geological profile surveyed map sheet survey fee survey for field and pipeline of gas and oil survey for marking of boundary survey for water conservancy planning survey in Ding County surveying surveying and mapping administration of land Surveying and Mapping Law of the People’s Republic of China surveying and mapping of island and reef surveying and mapping of remote sensing surveying and mapping satellite surveying and positionging methods surveying astronomy surveying for cultural heritage conservation surveying for site selection

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