Methods The lens diameter (LD), lens nucleus diameter (ND) and lens nucleus thickness (NT) in 97 eyes from 53 cadavers (average age, 26.2 years) were measured and statistically analyzed.

方法测量平均26．2岁的53例共97只青年尸眼的晶状体直径（LD）和晶状体核直径（ND）及厚度（NT）并进行统计学分析。

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"Lens hood" Diameter: 70mm (2.75 inch).

“镜头罩”直径：70 mm(2.75英寸)。

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This lens can magnify 20 diameter.

这个透镜能放大20倍。

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It uses a lens with a diameter of just a few millimeters and covers a much larger field of vision than a conventional rear-view mirror.

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Panasonic's new compact 3D lens for the LUMIX G Micro System features two optical systems installed within the diameter of the lens mount, creating stereo images from the left and right lenses that are then processed with a 3D image processing system.

ENGADGET: Panasonic's $900 Lumix GH2 officially debuts: 16MP, 1080p movie mode, 3D interchangeable lens