它的局部是凸的,因为它没有环路,且曲率永远不会改变符号。
It is locally convex in the sense that it has no loops and the curvature never changes sign.
这墙纸是浅金色的,上面饰有浮凸的涡旋状叶子图案。
The paper on the walls was pale gold, embossed with swirling leaf designs.
中心是一个满足弱线性不等式的合集,因此它是封闭的、凸的。
The core is a set which satisfies a system of weak linear inequalities, so it is closed and convex.
Recognizing fine patterns, and you have in fact a very specialization of your brain in the centre called the fovea.
识别精细图案,实际上你的大脑中心,有一个叫做中央凸的部具有特殊的作用。
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