1·It is locally convex in the sense that it has no loops and the curvature never changes sign.
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。
2·The hyperbolic surface, which has so-called negative curvature because its surface curves up and down at the same time, like a saddle.
双曲曲面，即通常所称的负曲率，因为它的表面同时向上和向下弯曲，就像一个马鞍。
3·Curvature of the surface prevents slump block from becoming completely detached.
表面的曲率防止滑塌块完全脱离。
4·If the universe has a positive curvature, it's a closed universe.
正曲率的宇宙是封闭的宇宙。
5·It goes back... Actually, some of you may be able to see the curvature.
它回来了。，事实上，你们有些人，也许能看到曲率。
6·Matter, energy and dark energy all produce curvature in space-time, however.
而事实上，物质、能量和暗能量在时空中都会产生弯曲。
7·Any farther away, and the system encounters problems due to the curvature of the earth.
由于地球表面弯曲，距离更远时，系统就遇到问题。
8·Because at that height you can see the blackness of space and the curvature of the earth.
因为在那个高度你可以看到太空的漆黑和地球的轮廓。
9·Technically, it occurs when the rate of curvature between 2 continuous surfaces are the same.
从技术上讲，当两个连续曲面拥有同样的曲率时才会出现。
10·Negative curvature is a little trickier to visualize. The most common description is a saddle.
了解负曲率宇宙要动点脑筋，最常见的描述就是它像马鞍。
1·Curvature of the surface prevents slump block from becoming completely detached.
表面的曲率防止滑塌块完全脱离。
2·The hyperbolic surface, which has so-called negative curvature because its surface curves up and down at the same time, like a saddle, just might represent the shape of the universe.
双曲表面，即通常所称的负曲率，因为它的表面曲线同时有的向上和有的向下，像一个马鞍，也许这样就可以代表宇宙的形状。
3·Then, with a few assumptions about the curvature and contents of the universe, they can reconstruct the positions of those objects from redshifts.
然后，通过一些关于宇宙曲率和内容的假设，科学家们能够重建这些物体的位置。
4·A more complicated curvature would be like a function that inputs an entry point and returns one of several local lowest points.
更为复杂的曲率将类似于一个函数，它输入一个入口点并返回几个局部最低点中的其中之一。
5·The shape of the detector must match the varying curvature of the image surface to accommodate continuously adjustable zoom, and this is easily done with this new hemispherical eye camera.
检测器的形状必须与图像表面改变的曲率匹配，以适应持续调整的变焦镜头的变化，而这，用这种新型的半球眼式相机可轻易做到。
1·I begin with a sight test, then Minshull takes a topography of my eye, photographing the curvature of my cornea to obtain the measurements needed to make the lenses.
我的试戴是从检查视力开始。米舒尔需要知道我眼睛表面的状况，于是他拍摄下我角膜的曲度，用以获得制作隐形眼镜所需的尺寸。
2·With any bend or curvature in the spine the body will be unable to rotate correctly and repetitively.
脊柱如果有任何弯曲或者曲度，身体就不能正确地、重复地转动。
3·In my opinion, the curvature was determined experimentally.
依我看，这种曲度是根据实验确定的。
4·This study investigates the mechanism of both forming process and springback of the draw formed panel with double curvature.
研究了双曲扁壳覆盖件的成形机理及回弹特点，分析了双曲度拉延回弹机理。
5·To evaluate the effect of a modified open door laminoplasty using anchor method on reducing the occurrence of axial symptoms and loss of cervical curvature.
观察评价锚定法单开门椎管成形术在降低术后轴性症状发生和减少颈椎曲度丢失中的作用。