COSTAS array has better correlation properties compared with the normal frequency hopping arrays.

与常规的跳频序列相比，COSTAS阵列具有良好的相关特性。

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This paper discusses normal mode and normal frequency, and then standing wave as an important example of normal mode.

本文讨论简正模式、简正频率以及简正模式的重要实例驻波。

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ObjectiveTo compare the effect of the normal frequency jet ventilation with the high frequency jet ventilation in suspension laryngoscopy.

比较常频通气与高频通气在支撑喉镜手术前应用效果。

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The minister said the exact reason for the collapse had not yet been pinpointed but, in the summer, "states try to take more power from the grid" and at the time of the collapse, the grid frequency was "above normal".

BBC: Power cut causes major disruption in northern India

What the May 6 crash did show was that while high frequency trading may work just fine in normal market conditions, when trouble comes the markets become a mile wide and an inch deep.

FORBES: High Frequency Traders Face SEC/CFTC Panel

And although high-frequency trading may make markets less volatile in normal times, it may add to the turbulence at the worst possible moment.

ECONOMIST: High-frequency trading: Wait a second | The