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。

youdao

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。

youdao