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shortwave communication
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shortwave communication
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shortwave communication
短波通信
利用波长为100~10米(频率为3~30兆赫)的电磁波进行的无线电通信。又称高频通信。
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Oum er-Rbia, Oued
Oum er-Rbia River
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Oumuamua
ounce
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更新时间:2025/7/2 22:51:37