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focal distance英英字典_focal distance剑桥英语解释_focal distance柯林斯英文解释_流逝汉英词典
流逝汉英词典

focal distance

F 开头单词

柯林斯词典

    focal length (also focal distance)

  • 1. N the distance from the focal point of a lens or mirror to the reflecting surface of the mirror or the centre point of the lens 焦距

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