“two-course beacon”的概念、定义、翻译、参考文献-科学参考

单词	two-course beacon
释义	two-course beacon 双向信标
随便看	speaker cone speaker-dependent speaker diaphragm speaker directivity index speaker efficiency speaker enclosure speaker frame speaker identification speaker impedance speaker-microphone speaker-phone speaker pressure-frequency response speaker pressure rating speaker-reversal switch speaker unit speaking and ringing key speaking battery speaking circuit speaking current(s) speaking key speaking level speaking pair speaking position speaking stop speaking test

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