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

单词	picture frequency
释义	picture frequency [`pik·chǝr ´frē·kwǝn·sē] ^{COMMUNICATIONS} A frequency that results solely from scanning of subject copy in a facsimile system. ^ELECTRONICS See <<frame frequency>>
随便看	aircraft detection aircraft dispersal area aircraft early-warning station aircraft electrification aircraft engine aircraft fuel aircraft gun aircraft icing aircraft impactor aircraft instrumentation aircraft instrument panel aircraft low-approach system aircraft machine-gun turret aircraft noise aircraft propeller aircraft propulsion aircraft pylon aircraft report aircraft rocket aircraft testing aircraft thermometry aircraft vectoring aircraft weather reconnaissance air crossing air-cure

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