“F数漂移式变焦距镜头”的概念、定义、翻译、参考文献-科学参考

单词	F数漂移式变焦距镜头
释义	F数漂移式变焦距镜头 Encyclopedia 艺术学镜头参数释 F-number drift zoom lensF数漂移式变焦距镜头当摄影镜头焦距f＇改变时，该摄影镜头的入瞳直径Dλ虽也跟着产生改变，但变化的倍率小于焦距f＇的改变，即f＇与Dλ二者的比值在变焦中改变了，从而使该摄影镜头的F数在变焦的全过程中产生变化的变焦距摄影镜头。
随便看	high efficiency cutting high efficiency deep grinding high-efficiency grinding high efficiency permanent magnet traction motor high efficiency platform for clean steel high efficiency video coding standard high efficient selection of strain high elastic alloys high elastic copper alloy high elastic deformation high elasticity of polymers high elasticity titanium alloy high electric field effect high electric field preservation high electric field sterilization high electromagnetic pulse protection high electron mobility transistor high-electron-mobility transistor high-electron-mobility transistor amplifier high-electron-mobility transistor, HEMT high-electron-mobility-transistor terahertz detector high element high-end equipment manufacturing industry high-end general chip high-end specialty chemicals

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