Titan looms just over the thin rings, while dark ring shadows on Saturn show the Sun to be above the ring plane.

靠近中的土卫六(泰坦)正处于纤细的光环上方。而投在土星表面的光环阴影表明，太阳正位于光环平面的上方。

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In Fraunhofer diffraction area, the spot center is light spot, around encircle light and dark ring.

在夫琅和费衍射区域内，光斑图像中央是亮光斑，周围环绕着明暗交替的圆环。

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Thus more than 90 per cent of the light is contained within the circle bounded by the second dark ring.

这样，有90％以上的光落在第二暗环所包围的圆面积之内。

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Thus more than 90 per cent of the light is contained within the circle bounded by the second dark ring.

这样，有90％以上的光落在第二暗环所包围的圆面积之内。

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