查询词典 tangent surface

The full length of this road is 5721 meters, including six turning points and twelve upright curve, according to the requirement of the letter of assignment, we should fulfill the missions as follows: Route plane design, route vertical section design, roadbed design, road surface framework design (asphaltum road surface and concrete road surface) as well as selecting one kilometer for road surface drainage design, route transect design together with cubic meter of earth and stone.

此公路全线5721米，共设有六个转点，十二个竖曲线，根据设计任务书的要求，本次设计将要完成以下任务：路线平面设计，路线纵断面设计，路基设计，路面结构设计(沥青路面和水泥混凝土路面)以及选取一公里的路线进行路面排水设计，路线横断面设计，并进行土石方的调配。

Through finding a best fitting spherical surface, making the maximum deviation between aspheric surface and the best fitting spherical surface minimum, the maximum deviation at this time is just the maximum asphericity of aspheric surface.

寻找最接近球面，使其沿法线方向与非球面的最大偏离量最小，此时的最大偏离量即为非球面的最大非球面度。

Two methods of surface treatment have been used to produce aluminum substrate which is called Mirror surface base material for organic photo conductor. One method is to atomize aluminum substrate on organic photo conductor directly and then carry on the anodic treatment which is called Anode surface base material. Therefore, the surface roughness was equal to the wave length of laser and the reflection light was eliminated by optical interference effect.

目前生产感光鼓所需的铝基材，其表面处理有两种做法，第一个做法就是直接在感光鼓的铝基材表面先进行雾化处理后再进行阳极处理，经阳极处理后的铝基材称为阳极基材，其粗造度Ra 值等於雷射光的波长，藉由光学干涉的原理将反射光消除。

Another approach in enhancing the light extraction efficiency of AlGaInP LED was accomplished using a surface roughening process. In this process, the Au(170 nm)/AuBe(260 nm)/Au(170 nm) ohmic contact layers were first deposited on the GaP window layer. After the alloy annealing process (480°C for 10 min), the Be atoms will diffuse into the GaP top layer and form non-uniform clusters. The LED samples were then immersed into a mixture 3H3PO4:1H2O2:1H2O solution for 6 min, resulting in a rough GaP surface. The luminous intensity of the AlGaInP LED can increase from 42 to 50 mcd, that is, an 18% enhancement can be achieved via the present non-photolithography surface roughening process.Keywords: LED, AlGaInP, Cu substrate, Reflector, Surface roughening

在实验的第二部份是开发磷化镓窗口层之粗化制程，我们是藉由正面金/铍欧姆接触电极之熔合制程，使铍扩散至磷化镓层，同时利用铍渗入磷化镓造成之特殊组成，可形成不均匀之蚀刻阻挡，而在磷化镓表面形成粗化，我们发现480℃、10分钟的熔合制程，加上浸泡磷化镓蚀刻溶液6分钟，可将四元发光二极体之发光亮度由42 mcd 提升到50 mcd，经由此无光罩粗化制程可将亮度提升18%，明显提升磷化铝铟镓发光二极体之外部量子效率。

In this paper, firstly, the embeddability of near-triangular graphs on the orientable surface is studied. By using Petersen's Theorem about 1-factor, we first prove that for a near-triangulation on the orientable surface, its geometry dual graph has a 1-factor; then after a procedure of operation leaded by the 1-factor, we show that if a graph G triangulates some orientable surface S_g, then G has a near-triangular embedding in S_h for h = g,g + 1,...,β(G/2」, where β is the Betti number of G. Hence we obtain a conclusion: A near-triangulation of the orientable surface is upper-embeddable. As a generalization, a class of near-quadrangulation is studied, and similar results are obtained.

本文首先研究了近三角剖分图的可定向曲面嵌入性质，通过运用Petersen关于1-因子的定理，首先证明了对于可定向曲面上的三角剖分图，其几何对偶图具有1-因子；然后在1-因子的导向下，通过做一系列增加亏格的手术，证明了如果一个图G三角剖分可定向曲面S_g，那么G可以近三角剖分可定向曲面S_h，这里h=g，g+1，…，「β(G／2」，β是指图G的Betti数，从而得出推论：可定向曲面上的三角剖分图是上可嵌入的，作为推广，又研究了一类近四角剖分图的可定向曲面嵌入性质，并得到类似的结论。

The valve seat has a first conical partial surface and a second conical partial surface wherein the second conical partial surface is disposed downstream of the first conical partial surface and is raised in relation to it.

阀座(9)包括一个第一锥形部分面(109)及一个第二锥形部分面(209)，其中该第二锥形部分面(209)设置在该第一锥形部分面(109)的下游并相对该第一锥形部分面凸出地构成。

The abstract lathe is in the machine manufacture uses a most widespread kind of engine bed, mainly uses in processing each kind of rotation surface (for example: In the outer annulus cylinder, the circular conical surface, the ring groove, the solid of revolution formation surface and so on) and the solid of revolution end surface, some lathes also can process the thread.

车床是机械制造中使用最广泛的一类机床，主要用于加工各种回转表面（如：内外圆柱面、圆锥面、环槽、回转体成型面等）和回转体的端面，有些车床还能加工螺纹。

The anti-reflux structure includes the stopper (54) having a conically shaped distal surface (59) and the inside surface (32) of the barrel (22) and the distal wall (31) being conically shaped (35) wherein the total included angle A of the inside surface (32) of the barrel (22) at the distal wall (31) is greater than the total included angle B of the distal surface (59) of the stopper (54) by at least 6 DEG .

抗回流装置包括具有圆锥形远面(59)的止动件(54)和针筒(22)在远壁(31)的圆锥形(35)的内表面(32)，其中针筒(22)在远壁(31)的内表面(32)的总夹角A比止动件(54)的远面(59)的总夹角B至少大6°。

Because of the cragginess of the 3-D surface, the distortion stripes appear when the common rectangular grating or sine grating is projected onto the object surface, which includes information about the 3-D surface profilometry. The images including distortion stripes are taken by CCD camera. The 2-D stripes information is got after processing these images. On the basis of mathematic reconstruction model and arithmetic, the 3-D surface profilometry data are gotten.

用普通白光将矩形光栅或者正弦光栅投影于被测物体表面上，由于物体外形凹凸等几何形状变化而在物体表面产生畸变条纹，这些畸变条纹就包含了物体表面形状的三维信息，由CCD摄像头摄取这些畸变条纹信息，对这些图像进行相应的处理，得到有关条纹中心线的二维信息，然后再根据相应的数学转换模型和重构算法对物体的轮廓进行重构，就可以得到被测物体表面的三维外形数据信息。

Atomic force microscopy is used to examine the surface morphology of the 3-monolayer InAs. It's found that the evolution of surface morphology with increasing the GaAsSb thickness can be classified into 3 stages: random distribution of InAs quantum dots, space-selective growth of InAs quantum dots on cross-hatching surface, and purely cross-hatching surface.

最后，由原子力显微镜分析，让我们观察到样品表面的InAs奈米结构的分布型态：(1)随机分布，(2)在田埂状(cross-hatching)的表面上选择性的成长，(3)奈米结构渐渐地消失，最后仅剩田埂状的表面型态。

The shaping method of noncircular part and the tool holder's radial motion characters in noncircular turning process are discussed in detail in the thesis.

论文详细研究了非圆零件的成型方法和加工过程中刀架的径向运动规律。

I have not really liked him,I do not like his this kind of disposition.

我没有真的喜欢他，我不喜欢他的这种性格。