“pulse-frequency modulation”的概念、定义、翻译、参考文献-科学参考

单词	pulse-frequency modulation
释义	pulse-frequency modulation [`pǝls ¦frē·kwǝn·sē ´mäj·ǝ´lā·shǝn] ^{COMMUNICATIONS} A form of pulse-time modulation in which the pulse repetition rate is the characteristic varied. Abbreviated PFM.
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