If she had tried to find out about the radio circuit, she would have learned something.

如果尝试了去了解印刷电路，她是可以学到一些东西的。

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Also, American Systems will support integrated circuit design and testing for analog, digital and radio frequency applications.

另外，美国系统将支持集成电路设计和模拟测试，数字和射频应用。

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During a seven-day auction on eBay that ended on May 29, Novocin says he sold four items, including an X-Band Weather Radar Modulator for and a high-frequency radio circuit card for .

最后，经过七天的竞价，诺沃辛卖出了四件零件，包括以500美元的售价卖出一个雷达调节器和以32美元卖出一个高频无线电电路板。

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Another nexus of history and current events is that Jeremy Rifkin, anti-biotechnology fanatic and all-around kook, is currently on the talk-radio circuit touting a new book.

FORBES: Commentary

The spring is wound for half a minute, and then unwinds over six minutes, charging a battery in the process, and providing enough energy to run the radio for an hour. (This means the radio's spring-controller circuit is no longer necessary.) Thus, Freeplay has switched from making solely spring-powered devices to making battery-powered devices that are equipped with a clockwork mechanism for recharging and emergency use.

ECONOMIST: Clockwork technology