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主动遥感与被动遥感最核心的区别就是遥感传感器接收到的电磁波信号能量最初来源不同，主动遥感的电磁波信号能量最初来源于遥感传感器本身或人工制造的电磁波信号，而被动遥感的电磁波电磁波信号能量最初来源于自然界，大多数是太阳光。. 打一个比方 ...
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Professional dancers pair with celebrities to train and compete in ballroom dancing, receiving guidance from a panel of experts along the way. Wikipedia
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