“polar keying”的概念、定义、翻译、参考文献-科学参考

单词	polar keying
释义	polar keying [`pō·lǝr `kē·iŋ] ^{COMMUNICATIONS} Telegraph signal in which circuit current flows in one direction for spacing.
随便看	data statement data station data station control data stream data structure data switch data system data system interface data systems integration data system specifications data tablet data tracks data transcription equipment data transfer data transmission data transmission equipment data transmission line data transmission-utilization measure data type data under voice data unit data validation data word date time group dating

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