Marconi was the first to develop a practical method for wireless telegraphy using radio waves.

马可尼是第一个开发出利用无线电波进行无线电报传输的有效方法的人。

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Ericsson, a Scandinavian company, was the first to develop this specification.

爱立信，一间斯堪的纳维亚的公司，首次开发了这个产品规格。

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