查询词典 space curve

The motion of a discrete curve in Minkowski space is first introduced. Then by identifying the spin vector of HF models with the unit vectors of discrete curve, respectively, we obtain the corresponding DNLS.

我们将主要考虑闵可夫斯基空间中离散曲线的运动情况，并利用离散曲线的单位矢量分别替代离散的MHF方程中的自旋矢量，给出相应的离散非线性薛定谔方程，从而建立了两者之间的几何等价性。

Prove, proof 直线:straight line 曲线:curve 平面:plane 举例: any of a set of two or more numbers used to determine the position of a point, line, curve, or plane in a space of a given dimension with respect to a system of lines or other fixed reference.

由两个或多个数值组成的数组中的任一数值，用来在一个直线系统或其它固定参照数值方面决定点、直线、曲线或平面在已知范围空间内的位置。

Doffer s arranged on the steering cylinder according to space envelope curve make the structure more compact, and belt track coincides more closely with the surface curve, which makes belt conveyer running drag coefficient decrease.

在一个运输系统中，以往由于运输巷道有变坡而必须用多台带式输送机搭接运输时，最适合采用本压带装置，可实现省工、省电、省设备，省安装。省电控见图

Based on the Guldin's first theorem, it was deduced that the general formula to calculate the rotating surface area which is shaped by rotating the curve Г in a plane around the L-axis in the space by using curve integral.

依据古鲁金第一定理推证，得到利用曲线积分计算空间某一平面上的曲线Г绕直线L旋转而成的旋转曲面面积的通用公式；利用曲线积分计算xoy面上的曲线c绕直线L旋转而成的旋转曲面面积的通用公式。

I am just a common person, why I not only saw the identity of time and space, but also saw the multi-dimension. I saw the "curve light", and I saw the "not curve light" and "light of black hole" too, how amazing! How beautiful!

我是极普通的人呀，为什么我不仅看到了时间和空间的"同一性"还看到了它们的"多维性"；"弯曲的光"我看到了，"不弯曲的光"和"黑洞的光"竟然也被我看到了，太不可思义！

The line of curvature isn't only a curve of space, but a special and a very important curve of surface.

曲率线不仅是一条空间曲线，而且是曲面上定义的一种特殊而重要的曲线。

This paper develops a mathematical model for the solution to the longitudinal tooth curve of an internal gear shaver based on the simplified principle for space transmission of a helical gear pair without flank clearance,and proposes a calculating approach of the profile modification of the grinding wheel to be used for grinding the longitudinal tooth curve of the shaver.

用简化的空间螺旋齿轮作无侧隙啮合传动的原理，建立了求解内剃齿刀齿向曲线的数学模型，并给出了修磨这种齿向曲线的盘形砂轮的廓形计算方法。

In space optimization, the principle of equal-tiny increment is applied first.This classical method is used while the curve of the equal-tiny increment is raised.But in practice the curve of the equal-tiny increment is not always raised because of many uncertain factors.

在空间最优化问题的求解方法上，等微增率法提出较早，但用等微增率法要求微增率曲线是凸的，而实践中导致微增率曲线非凸的因素很多。

For example, a 19th-century mathematical curiosity called the "space-filling curve"- a sort of early fractal curve - recently resurfaced as a model for the shape of the human genome.

例如，19世纪一个数学家的好奇心-叫做&空间-充满曲线&-一种早期的分形曲线-最近重新浮出水面，作为模拟人类基因组形状的模型。

For example, a 19th-century mathematical curiosity called the "space-filling curve"- a sort of early fractal curve - recently resurfaced as a model for the shape of the human genome.

虽然会破坏我曾经希望得到的披萨定理，但我这些日子确实不再吃很多美国披萨了。上一篇：办公室八卦是好是坏？

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。