The new coded strategy can achieve full space-time-frequency diversity over frequency selective fading channel.

在频率选择性信道中，新编码策略可以获得空时频全分集增益。

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In this paper, we propose a diagonal space-frequency (DSF) block codes over frequency-selective Rayleigh fading channels and study performance of the code.

本文提出了频率选择性瑞利衰落信道中的对角空频分组码(DSF)，研究了码的性能。

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At present the matching problems between the generator over frequency protection and turbine over speed protection exist commonly in coal-fired power units.

目前，火电机组普遍存在发电机过频保护与汽轮机超速保护之间的配合问题。

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The experts say you will see that with much increased frequency over time."

VOA: standard.2009.12.12

So, if we start instead with talking about the energy levels, we can relate these to frequency, because we already said that frequency is related to, or it's equal to the initial energy level here minus the final energy level there over Planck's constant to get us to frequency.

如果我们从讨论能级开始，我们可以联系到频率上,因为我们说过频率和能量相关,或者说等于初始能量,减去末态能量除以普朗克常数。

麻省理工公开课 - 化学原理课程节选

So, we can get from these energy differences to frequency h by frequency is equal to r sub h over Planck's constant 1 times 1 over n final squared minus 1 over n initial squared.

所以我们通过不同能量,得到不同频率，频率等于R下标,除以普朗克常数乘以1除以n末的平方减去。

麻省理工公开课 - 化学原理课程节选

Strum down a list of radio stations and you can feel as your fingertip passes over each frequency number.

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Simply stated, single-frequency networks are when a broadcaster uses multiple transmitters to send the same signal over the same frequency.

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The overall number of sunspots typically varies in frequency over 11 year cycles.

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