1 refers to the TD file, which has not been downloaded by Xunlei. In order not to be confused with movie files, add an extension "TD" after it to distinguish it, and TD will be cancelled automatically after downloading.

2. refers to the meteorological term, TD (tropical depression), which is the lowest level of tropical cyclone classification.

3, refers to the TD mobile phone, TD mobile phone is a kind of 3G mobile phone, using China 3G? TD-SCDMA communication standard has been formulated, which supports 3G functions such as high-speed mobile Internet access, mobile TV, video calling and video conference.

Extended data:

The wireless transmission scheme of TD mobile phone flexibly integrates basic transmission modes such as FDMA, TDMA and CDMA. Combined with joint detection, it shows remarkable performance in transmission capacity.

By introducing smart antenna, the capacity can be further improved. Smart antenna reduces the interference caused by frequency reuse between cells because of its directivity, and provides higher traffic through higher frequency reuse rate.

Baidu encyclopedia -td