military vital area 中文意思是什麼
military vital area
解釋
軍事要區-
Especially in military affairs, it is the vital part in military operations. short - wave communication is attractive because only little power and proper expenditure is needed when it is used for long distance communication. for this valuable trait, many country have expanded the area of short - wave communication ’ s research, thus there has become more and more new - model communication system
短波通信之所以能吸引用戶用它傳遞信息,最基本的原因是由於進行遠距離通信時,僅需要不大的發射功率和適中的設備費用,這一寶貴的優點,使得世界各國近年來加緊了短波通信的研究,出現了各種新型的短波通信系統。
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