名词
中文翻译：减少的光学长度
同义词：
['reduced length', 'reduced dimension例句：1. The new lens reduces the optical length of the camera.（新镜头减少了相机的光学长度。）']
例句：
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1. The new lens reduces the optical length of the camera.
新镜头减少了相机的光学长度。
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2. The reduction in optical length is due to the use of a shorter focal length lens.
光学长度的减少是由于使用了焦距较短的镜头。
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3.The reduction in optical length can be achieved by using a longer focal length lens.
通过使用长焦距镜头可以减小光学长度。