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单词 film speed
释义

Definition of film speed in English:

film speed

noun ˈfɪlm spiːd
  • 1Photography. The degree of light sensitivity of a photographic film; a numerical measure of this. In later use also: a numerical measure of the signal gain of the photosensor in a digital camera.

  • 2Cinematography. The speed at which a cinematographic film passes through a camera or projector.

Origin

Late 19th century. From film + speed.

Definition of film speed in US English:

film speed

nounˈfɪlm spiːd
  • 1Photography. The degree of light sensitivity of a photographic film; a numerical measure of this. In later use also: a numerical measure of the signal gain of the photosensor in a digital camera.

  • 2Cinematography. The speed at which a cinematographic film passes through a camera or projector.

Origin

Late 19th century. From film + speed.

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更新时间:2025/6/20 5:55:36