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正翻译步骤 2

步骤 2
There are a few external differences, reflecting the different antenna design of the new CDMA iPhone. CDMA, or Code-Division Multiple Access, is actually just a channel access method standard. When most people (including us) say CDMA, they usually mean CDMA2000, which is a family of 3G communication standards that run on top of the CDMA mechanism of utilizing airwaves. Confused? Unless you're an RF engineer, the distinction probably doesn't matter to you.
  • There are a few external differences, reflecting the different antenna design of the new CDMA iPhone.

  • CDMA, or Code-Division Multiple Access, is actually just a channel access method standard. When most people (including us) say CDMA, they usually mean CDMA2000, which is a family of 3G communication standards that run on top of the CDMA mechanism of utilizing airwaves. Confused? Unless you're an RF engineer, the distinction probably doesn't matter to you.

  • In the US, Sprint and Verizon use CDMA. T-Mobile and AT&T use GSM.

  • Worldwide, GSM (which stands for Global System for Mobile Communication) is far more popular. But CDMA is still used in 40 countries, primarily in Asia. China Telecom is the next largest CDMA carrier, with over 90 million subscribers.

这有一些外表的不同,反映了写号机不同于插卡版的天线设计

码分多址(CDMA)实际上只是一种信道接入方法标准。当大多数人(包括我们)说CDMA时,他们通常指的是CDMA2000,这是一系列3G通信标准,运行在利用无线电波的CDMA机制之上。觉得迷惑了吗?除非你是一名射频工程师,否则这种区别对你来说可能并不重要。

在美国,Sprint和Verizon用CDMA,T-Mobile和AT&T用GSM

在世界范围内,全球移动通讯系统(GSM)明显更加流行,但CDMA仍然在40多个国家使用,主要在亚洲。中国电信曾经是第二大CDMA运营商,拥有9000万用户,在2019年中国电信正在取消CDMA业务,CDMA在中国将成为历史

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