At the same time, M-QAM mapping can be used in OFDM for improving data transportation speed.

同时在OFDM调制时可以采用M - QAM映射方式，提高短波跳频系统的信息传输速率。

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Second-ranking transportation speed adjustable frequency conversion and maximize maximizing machine efficacy, ensure Cleaning and blot effect.

输送速度变频可调，最大化发挥机器的功效，确保清洗及吸干效果。

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The communication time-delay concludes the delay of remote control commands and telemetry signals, which is brought by light transportation speed.

通信延迟包括遥控指令的延迟和遥测信号的延迟，主要是由光传播速度造成的。

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The Obama administration is also putting money into transportation to speed recovery.

VOA: special.2009.11.06

With investments in high-speed transportation and communication infrastructures, the creative class should be persuaded to return to the periphery to enjoy lower housing costs and a higher quality of life, and contribute to a local economy that can then provide sustainable services.

ECONOMIST: Letters

Silver and copper are smaller markets, but their adherents argue that the industrial demands for the shiny stuff by nations that must build out their infrastructure products such as the fast speed transportation system in China or the ports of India, Thailand another emerging markets clearly suggest a shortage of silver and copper, possibly iron ore as well.

FORBES: Smart Money Is Long Gold, Silver, Copper, Oil And Zero Coupon Treasuries

Nice has fantastic public transportation with high-speed trains, a modern tramway and comprehensive bus routes.

BBC: Nice on a budget