It has high frequency efficiency and its implement is simple. Therefore, it has become the topic in high-speed mass optical fiber communication system.

它具有结构简单，频谱利用率高的优点，因此成为高速大容量光纤通信系统中的研究热点。

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From a physical layer aspect, those techniques feature high frequency and power efficiency, and are able to adapt to changing environments and services, will win in the long run.

在物理层技术层面上，具有高频谱效率和功率效率，并能适应环境和业务变化的技术成为研究的热点。

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High inverter frequency, obviously improved the efficiency of the machine. high energy saving ability.

逆变频率高，明显提高了整机效率，节能效果显著。

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The Hitachi Sound Bars feature four high efficiency full range speakers and two high frequency tweeters with state-of-the-art Class D digital amplifiers.

ENGADGET: Hitachi intros UltraVision LED TVs with Roku-ready HDMI, freshens Value TVs and sound bars for the fall

The speed and efficiency of the Equiduct model, specially designed for high-frequency trading of equities in the fragmented European market, is attracting institutions and bringing new players onto the market, says Fischer.

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