This machine should be fixed on a plane surface.

这个机器应该固定在平面上。

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An optical device that projects a virtual image of an object onto a plane surface, especially for tracing.

一种光学装置，可将物体虚像投影到一平面之上，多用于跟踪。

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A plane surface approximation method for image coding and its quad tree scheme are presented in this paper.

该文提出了一种平面逼近图像编码方法及其四叉树实现方案。

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"The fact that the plane landed on a soft surface and that there was no fire helped keep the number of fatalities low, " he said.

BBC: Turkish plane crash in Amsterdam

By using lightweight aerospace materials like carbon fiber, which has the strength of steel but weighs a fifth as much, naval architects can design boats that plane across the surface of the water instead of plowing through it.

FORBES: Mine's Lighter

This is a special type of Earth model which traces its idealised "horizontal" surface - the plane on which, at any point, the pull of gravity is perpendicular to it.

BBC: Europe's Goce satellite probes Earth's gravity