英语词汇“public switching network”的读音、翻译、释义、用法及例句-语文网

词汇	public switching network
释义	public switching network 公用交换网路（=PSN）向许多使用者提供线路交换的各种交换系统。在美国有四类这样的网路，即：Telex（使用者电报）、TWX（电传交换业务）、电话以及宽频交换业务。
随便看	think on think out think over think piece think tank think tank think the world of think through think time think twice think up think upon thinly thin market thinner thinness thinning process thinnish thin out thin-skinned thio- thioaldehyde thioantimonate thioantimonite thioarsenate

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