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 order to improve performance of this method over frequency selective channel, we average over several symbols.

并针对频率选择性信道采用了多符号平均改善算法性能。

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A new transmission scheme, which combines transmit preprocessing with multiuser MIMO downlink system over frequency-selective fading channel is proposed.

提出了一种适用于频率选择性衰落信道，新的下行多用户MIMO系统预处理传输方案。

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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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