The high-frequency(HF)communication,commonly covering the frequency range between 3 and30MHz,is an effective and important long-distance communication approach.Using the ionosphere as a natural high altitude reflector,trans-horizon HF radio transmission is possible with advantages such as high mobility,convenient deployment,strong survivability and
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机译:Emotionally Intelligent Leadership: A Workshop to Train AG Hong Kong Ministers for Relational and Ministry Effectivesness =情感智慧型领导︰为香港神召会教牧提升关系及情感效能培训