“white-to-black frequency swing”的概念、定义、翻译、参考文献-科学参考

单词	white-to-black frequency swing
释义	white-to-black frequency swing [¦wīt tǝ ¦blak `frē·kwǝn·sē ´swiŋ] ^{COMMUNICATIONS} In a facsimile system employing frequency modulation, the numerical difference between the signal frequencies corresponding to picture white and picture black at any point in the system.
随便看	orbital period orbital plane orbital rendezvous orbital sander orbital symmetry orbital velocity orbite orbiting collision Orbitoidacea orbit point orbitron orbit space orchard orchid Orchidaceae Orchidales orchiectomy orchil orchiopexy orch-, orchi-, orchid-, orchido-, orchio- orcin OR circuit ORD order order-disorder transition

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