It was also the first carrier to offer wireless E-mail, the latest high-speed networks and a smartphone using the Android operating system.
它也是首个提出无线电邮，最新高速网络以及采用案卓操作系统的智能手机的运营商。
2
T-Mobile has a history of cutting prices aggressively. It was also the first carrier to offer wireless E-mail, the latest high-speed networks and a smartphone using the Android operating system.
T - Mobile一向有大幅降价之举，同时也是首家提供无线电邮、最新高速网络和安卓智能手机的运营商。
3
An introduction of the design and implementation of a broad-band square circuit is given, which is used to recover the carrier of the highspeed QPSK signal.