曲率

The main obstacle is the lack of examples and obstructions.

但我们对曲率的认识仍然相当有限，缺乏例子是这一研究的最主要的障碍。

Geometric continuity is less strict than mathematical continuity. G0 and C0 are equivalent, that is, the segments are positionally continuous. G1 implies that the tangent vectors are equal in direction, but not magnitude. G2 implies the curvature is the same, but the second derivatives are not.

几何连续性没有数学连续性严格。G0 和 C0 的意思相同，即段在位置上连续。G1 意味着切向矢量的方向相同，但模量不同。G2 意味着曲率相同，但二阶导数不同。

Geometric continuity is less strict than mathematical continuity. G0 and C0 are equialent, that is, the segments are positionally continuous. G1 implies that the tangent ectors are equal in direction, but not magnitude. G2 implies the curature is the same, but the second deriaties are not.

几何连续性没有数学连续性严格。G0 和 C0 的意思相同，即段在位置上连续。G1 意味着切向矢量的方向相同，但模量不同。G2 意味着曲率相同，但二阶导数不同。

Notice that (1) the subdivision is geometry based, i.e. high curvature areas receive more quadrilaterals, and (2) low curvature areas contain more quadrilaterals than necessary due to the crack-preventing nature of the process.

注意（1）这个细分是基与几何的，就是，大曲率的区域有更多的四边形，因为这个过程有防止出错的特性。

This kind of subdivision, although not economical in terms of the number of quadrilaterals, is precisely what we want for obtaining the parameters, i.e. a uniform, geometry/curvature based distribution of quadrilaterals is more important to get good parameters than the minimum number.

这种再分方法尽管在四边形的数量方面不是很经济，但它可以使我们得到精确的参数，就是说对于要得到一个好的参数来说，一个统一、基与几何或曲率的四边形分配比最小数量更重要。

METHODS:Thirty-eight ametropia patients(76 eyes)were fitted with RGPCL based on their subjective refractions,corneal curvatures and diagnostic fitting.

对38例(76眼)来我院验配RGPCL的患者，根据其屈光度、角膜曲率和配适情况选择合适的镜片。

Both the curvature of the crystalline lens surface and the thickness change at this time[3], and a clear image of this target is formed on the retina.

此时水晶体的前缘曲率以及其在光轴上的长度会产生改变，而使得我们所注视的物体能清楚的聚焦在视网膜上。

The coefficients and diffusion procedure in Helmholtz equation are determined by the diffusion and dissipation property of vorticity.

理论和实验证明了曲率驱动的亥姆霍兹涡量方程模型在图像修复中的有效性。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。