飞场频率管控对飞行安全极为重要。

Fly field frequency control is a key to fly field safety.

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要根据磁场频率和强度选择合适的屏蔽材料。

Shield the magnetic field with an appropriate material for the frequency and field strength.

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声光晶体由行波场驱动，声场频率则由系统的反馈讯号控制。

The frequency of the sound wave is controlled by the feedback signal of the system.

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声光晶体由行波场驱动，声场频率则由系统的反馈讯号控制。

The frequency of the sound wave is controlled by the feedback signal of the system.

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