查询词典 torus function

In this dissertation, we focus on the incompressible surface obtained from theamalgamation of two 3-manifolds with torus boundaries and obtained some good results.

本文研究了由两个以环面为边界的3维流形作融合积所产生的3维流形中的不可压缩曲面，得到了一些良好的结果。

This paper proposes an algorithm of torus reconstruction based on feature recognition and semantics of engineering annotations.

机械零件中的管道和曲面过渡通常都由圆环面构成。

Achene ovoid to semicircular, often compressed, sessile or stipitate on oblique torus, usually reflexed on dorsiventrally or laterally winged pedicels.

瘦果卵球形到卵圆形，经常压缩，无柄或者具柄在斜花托上，通常反折在背面或者侧面具翅花梗。

This dissertation gives necessary and sufficient conditions for 2-torus parabolic maps to be invertible,which improves P.

本文首先给出了二维环面上抛物型映射可逆的充分必要条件，完善了P。

It has the general shape of a torus, like a donut. As with the Jewish dish kugel, the name 'gugelhupf' is related to the Middle High German word Kugel meaning "ball" or "globe".

它通常呈环状花托的样子，在犹太附菜中，&gugelhupf&这个名字与中古高地德语单词&Kugel&的含义&球状物&或&球体&相关。

It has the general shape of a torus, like a donut. As with theJewish dish kugel, the name 'gugelhupf' is related to the MiddleHigh German word Kugel meaning "ball" or "globe".

它通常呈环状花托的样子，在犹太附菜中，&gugelhupf&这个名字与中古高地德语单词&Kugel&的含义&球状物&或&球体&相关。

The particles will drift out of the torus no matter how one juggles the temperatures and magnetic fields.

不论怎样改变温度和磁场，粒子都将漂移出环。

Torus A disk-shaped structure formed from lignified primary cell-wall material on the middle lamella of a bordered pit.

纹孔塞：位于具缘纹孔中间层，由木质化的初生壁形成的一个盘状结构。

The constructed surface not only has the same structure to the bicubic Coons pacth, but also it can help us to obtain different surfaces by changing the values of the parameters. Furthermore, it can accurately represent torus、ellipsoid and so on.

所构造的曲面不仅具有双三次Coons曲面片的相似的结构，可以通过改变参数，得到不同的曲面片，而且还能精确地表示圆环面、球面、椭球面等二次曲面。

The following exciting results are revealed: 1 When considering the influence of some nonlinear elements such as hard-limit of exciters, the effects of some devices such as Power System Stabilizer and Static Var Compensator which can introduce positive damping in power system, the reasonability of system parameter values in simulation, the SNB surface and HB surface on the boundary of SSSR will turn close to each other and even coalesce together; 2 Under some conditions, coupling between slow exciters and shunt capacitors will bring negative damping in power system dynamics, which increases the possibility of oscillatory instability. So the power system with mass shunt compensators is easily subjected to the oscillatory instability. In recent years, chaotic phenomena of power system have been reported many times. Some simulation studies even found chaos existing inside the power system SSSR. In this dissertation, chaotic phenomena in power systems are thoroughly studied in order to make clear the relation of chaos and SSSR. The following results are derived: 1 Based on Li-Yorke Theorem and their definition on the chaos, the existence of chaos in power system is verified; 2 Three possible routes of causing chaos in power system are found and deeply investigated. They are route of cascading period doubling, route of directly initial energizing and route of torus bifurcation (or quasi-periodicity). The latter two routes are investigated for the first time in power system stability studies; 3 When the stability conditions of chaos are broken, it is found they can lead to voltage collapse, angle divergence, or voltage collapse with angle divergence simultaneously.

针对在电力系统小扰动稳定区域内可能存在混沌吸引域的有关报道，本文深入研究了电力系统混沌现象的出现途径和与系统失稳模式之间的关系：1利用Li-Yorke定理和Li-Yorke的混沌定义，从理论上证明了电力系统混沌现象的存在性；2发现了电力系统中导致混沌出现的三种可能途径：倍周期分岔导致混沌、初始能量直接激发混沌和经由环面分岔导致混沌，并对后两种新发现的途径进行了较为细致的研究；3发现了混沌极限环破裂导致电压崩溃、角度失稳以及电压崩溃和角度失稳同时出现的现象，其中混沌极限环破裂导致系统角度失稳和电压崩溃及角度失稳同时出现的现象均属首次报道；4证明由微分-代数方程描述的系统模型，其小扰动稳定域的边界只包含HB、SNB和SIB三种分岔界面，在SSSR的内部和边界上，均不可能存在会导致混沌的点，从而将混沌现象排除在小扰动稳定域的研究之外，简化了后者的研究工作。

A backer of an Afghan law that critics say legalizes marital rape has rejected the international outcry as foreign meddling.

饱受批评的一项法律的拥护者说合法化的婚内暴力不会受国际舆论的干涉。

Years ago, a ancient Egyptian fleet went to the Land of punt for seeking a kind of flavor named "myrrh", and aromatic plants which has dense exotic style for the queen Hatshepsut.

3500年前的一个古埃及的舰队到&彭特之地&寻找一种叫没药的香料。