文章指出，该测量系统还可用来测量不规则、大面积、不透明平面的面积。
The paper stated that this measuring system can also be used to measure the area of irregular large opaque planes.
Yabe博士的诀窍是使用比较小的菲涅尔透镜——棱镜同心环构成的透明较薄的平面透镜。
Dr Yabe's trick is to use relatively small Fresnel lenses-transparent and relatively thin planar lenses made up of concentric rings of prisms.
或者，添加与地平面垂直的、计算出透明度的透明图形，创建针对所有视角的更真实的分层效果。
Or add transparent graphics with computed transparencies perpendicular to the Earth plane to create a more realistic layered effect for all viewing angles.
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