两维的

Classifying and computing a QSIC (quadric surface intersection curve) are important operations in computing the boundary representation of a solid in solid modeling system, and also are applied in other geometric processing.

对两二次曲面交线(QSIC-Quadric SurfaceIntersection Curve)的拓扑分类和计算是立体造型系统计算三维物体边界表示的一个非常重要的操作，同时还可应用在其它的几何处理算法中。

Shaw found the costume to be physically challenging during his scene; he had difficulty breathing through the two small holes in the quarter-inch thick Darth Vader mask that covered his entire face and head.

肖觉得这一幕中所穿的戏服是一个对身体的挑战；四分之一英寸厚的达斯·维德面具覆盖了他的整个头面部，他难以通过上面的两个小孔中呼吸。

For many years, California wineries made wine from Sauvignon Blanc grapes, but there was almost no consistency of style: some made bone-dry wines after the fashion of the French in the Graves and Loire regions, while others chose to make very sweet, dessert-style wines after the Sauternes and Barsacs.

在一段时间里，加州的酿酒人一直在用白苏维翁酿造自己的葡萄酒，但是这也分为两种风格：一种跟随法国的格拉芙和卢瓦尔地区的风格生产绝干葡萄酒；另一种则跟随苏代和巴萨克地区的风格，生产甜酒。

We will look at two studies that address the 3-dimensional conformation of the native prion protein and the infectious scrapie state using cryoEM and X-ray crystallography.

我们将探讨两个分别使用低温电子显微镜和X射线结晶法阐明了自然状态下的朊蛋白和传染性的瘙痒病状态下的朊蛋白的三维构象的研究。

An oxygen-bubble and white-light speckle velocimetry method is presented.Instead ofpulsed laser and commonly used particle,a sheet like-bubble mass generated from anade wire byeletrolysing water is used as particle tracer,a white light flash set controlled by digital time delaycircuit is used as double pulsed light source,and 2-D velocity distribution in a sectional planewithin flow field can be obtained without using light sheet technique.

提出了一种氧气泡粒子白光散斑测速技术，与以往散斑测速方法不同的是，采用电解水时电解阳极丝上产生的氧气泡做为流场示踪粒子，用两个闪光时间间隔由数字延时电路控制的普通闪光灯做为散斑底片拍摄时的双脉冲光源，并且勿需片光技术，即可获得流场内部一个截面上的二维速度分布。

3D control of micropositioning, the environment for human-computer interaction based on the micro stereo image displaying, and microinjection are three focuses of this dissertation.The imaging models of CMO micro stereoscope and G micro stereoscope used in microvision subsystem are deduced. According to the imaging models, 3D visual servoing model based on image for micropositioning is set up. The technology of tracking and matching on the feature of image, which are relevant in visual servoing, is studied. Two arithmetic for avoiding obstacles, rolling/surrounding and curved tracking based on the depth first search, are further discussed.

在此基础上，对三维微定位控制技术、基于显微立体图像显示的人机交互操纵环境和微量注射等三个内容进行了重点研究：为了解决3D微定位问题，推导了显微视觉分系统采用的CMO型和G型体视显微镜光学成像模型，在此基础上建立了基于图像的3D显微视觉伺服定位控制模型，对视觉伺服中涉及的实时跟踪与立体匹配技术进行了研究，并进一步探讨了卷包裹法和曲线跟踪两种避障算法。

Numerical modelling of one-dimensional unsteady flow in complicated systems, such as long distance water transfer project and urban storm sewer network etc., play a major role in practice of Hydraulic Engineering, in which transcritical flow and transition between free surface and pressurized flows are two important issues.

长距离调水工程和城市排水管网等复杂系统的一维非恒定流数值模拟对于水利工程实践有着十分重要的意义，跨临界流和明满流是其中的两个重要的研究方向。

The introduction of local supersymmetry on worldsheet results in the Ramond-Neveu-Schwarz model, and global supersymmetry in the ten-dimensional spacetime directly yields the Green-Schwarz superstring. The Green-Schwarz superstring theory is a covariant theory.

这两种描述方式的不同点是：Ramond-Neveu-Schwarz超弦理论在超弦的世界面引入局域的超对称，Green-Schwarz超弦理论是在十维时空中直接引入超对称，它是一个协变的理论。

The introduction of local supersymmetry on worldsheet results in the Ramond-Neveu-Schwarz model, and global supersymmetry in the ten-dimensional spacetime directly yields the Green-Schwarz superstring.

这两种描述方式的不同点是：Ramond-Neveu-Schwarz超弦理论在超弦的世界面引入局域的超对称，Green-Schwarz超弦理论是在十维时空中直接引入超对称，它是一个协变的理论。

In this thesis, localized electronic states in semiconductor SLs with structural defects, and the acoustic phonon transmission and thermal conductance in the low dimensional nanostructures are investigated.

本文对含结构缺陷超晶格中的局域电子态的性质和低维纳米结构中的声子输运和热导性质两个方面作了有益的探索，获得一些有意义的结果。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！