随着无线电通讯日益微芯片化，“软件定义无线电”将能够根据自身传播通路在不同标准和频率之间切换。

As radio increasingly moves onto microchips, "software-defined radios" will be able to switch standards and frequencies as they go.

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在电话交谈中要澄清字母的拼读时使用国际无线电标准拼法非常有用。

When clarifying spelling on the phone, it is useful to know the International Radio Alphabet.

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国际电信联盟（ITU）的三个主要机构之一。它主要从事于远距离无线电通信的审批与推荐标准。

One of three main institution of the International Telecom munication Union ( ITU ). It mainly works at the examination and approval of remote radio communication and the recommendation of standards.

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