The calibration of the camera and the flat surface has been discussed.

探讨了摄像机的标定、光平面的标定。

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As the sun moves, so does the shadow of the stick across the flat surface.

随着太阳的移动，棒的影子也在平面上移动。

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CHAMFER: the flat surface formed by cutting away the sharp edges of two meeting surfaces.

倒角：两个表面相交处，通过切掉尖锐边缘形成的平面。

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The artist draws an image with oily ink onto a piece of stone or other flat surface.

VOA: special.2009.09.02

"Well,one of the things that's interesting about these flexible sheets is that they can be curved, so you could imagine putting them in unconventional forms, like on the surface of a vehicle or something like that, where you don't have a flat surface."

VOA: standard.2010.02.19

The system is not only attractive and clever, but is also uniquely designed to fit on the relatively flat surface of a watch dial and movement.

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The bright Leeds sunshine and flat surface gave little assistance to the bowlers, but England's fielding in general was unusually lax and tactics with the ball that previously proved so effective did not work.

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While the screen's surface is completely flat, the edges curve around gently, forming a rounded back.

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