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

单词	pulse-duration modulation-frequency modulation
释义	pulse-duration modulation-frequency modulation [`pǝls du̇¦rā·shǝn ´mäj·ǝ´lā·shǝn `frē·kwǝn·sē ´mäj·ǝ´lā·shǝn] ^{COMMUNICATIONS} System in which pulse-duration-modulated subcarriers are used to frequency-modulate a second carrier. Also known as pulse-width modulation-frequency modulation.
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