To face the body is the creation of space, after determining the morphology and thickness of the surface front unit body, a plurality of unit surface assembled to the uniform space.

以面体来作为创造空间的因素时，在确定单位面体的正面形态及厚度以后，把若干个单位面体组合到统一的空间里。

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Thin wooden slats circle the unit to provide a smooth running surface to roll it and openings on the side and slated Windows let light into the interior.

它的表面环绕了一层薄木板保持表面光滑，能够使它滚动起来，在侧面开口以及预订窗户能够让外部的光线照射进来。

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And the way it will work is that you have to choose an orientation of a surface, which just means choosing one of the two possible unit normal vectors.

具体方法是，先给曲面定向，也就是选择两个单位法向量中的一个。

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The Barclays analyst chopped his forecast for December quarter Surface unit sales to 700, 000, from 2 million.

FORBES: Microsoft: Barclays Cuts Ests On Weak PCs, Slow Surface Ramp

Microsoft has set expectations on the Surface unit in a number of ways (such as pricing, which I discussed yesterday), but the expectation generated with consumers does not seem to be matching up with reality.

FORBES: Microsoft Has A Problem With The Public's Expectation Of The Surface

Coal mining accounts for 90% of sales at Joy's underground division and 33% at its surface-mining unit (copper and other ores account for the rest).

FORBES: The Big Dig