“ultrasonic communication”的概念、定义、翻译、参考文献-科学参考

单词	ultrasonic communication
释义	ultrasonic communication [¦ǝl·trǝ`sän·ik kǝ´myü·nǝ`kā·shǝn] ^{COMMUNICATIONS} Communication accomplished through water by keying the sound output of echo-ranging sonar on ships or submarines.
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