In a sub-Saharan context the virus is spread through transmission in warthogs and other wild pig species and can be transmitted by a particular type of tick.

在非洲撒哈拉以南地区，病毒通过疣猪和其它野猪等传播，也可通过特定类型的虱子传播。 在家猪中直接传播是一个日益严重的问题。

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A kind of wireless ATM air interface cell format was defined, and a cell protection field at transmission convergence sub layer of wireless physical layer was designed.

定义了一种无线at M空中接口信元格式，设计了无线at M物理层中传输会聚子层信元保护域。

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It copies the original data stream to several parallel data streams, spreads them in both time and frequency domain, then modulates them to orthogonal sub-carriers for transmission.

它先将原始数据流复制成多路并行数据，经频域扩频和时域扩频，再调制到互相正交的子载波上传输。

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In May, an India-made power transmission line to Kabul and a sub-station were opened, bringing 24-hour electricity to the capital for the first time in 17 years.

BBC: India: Afghanistan's influential ally

In fact, the sporadic transmission of malaria in the sub-tropical regions of the rich countries was vastly easier to control than is its chronic transmission in the heart of the tropics.

ECONOMIST: BY INVITATION: Helping the world’s poorest | The