Abstract: the VLF Through-the-Earth Communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media.
文摘：由于大地信道稳定，低频透地通信被认为是最可靠的救急通信方式。
Abstract: the VLF Through-the-Earth Communication system is recognized as the most reliable way of conveying dispatching information due to its special transmission media.
文摘：由于大地信道稳定，低频透地通信被认为是最可靠的救急通信方式。
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