查询词典 elliptic surface

In this article, an automatic elliptic pore size measuring system is developed based on digital image processing techniques, in which, CCD camera grabs the microscopic image of to-be-measured end surface, video image grabber digitizes it and computer processes it by way of digital image processing and gives the result.

本文研制了基于数字图像处理的椭圆型孔径自动检测系统，它由CCD摄像机采集被测端面的显微图像，视频图像采集板将其数字化，计算机利用数字图像处理技术进行处理给出结果。

A surface having parabolic sections parallel to a single coordinate axis and elliptic sections perpendicular to that axis.

具有平行于一个坐标轴的抛物线部分且垂直于同一个轴的椭圆形部分的表面。

For the elliptic cylindrical surface which is the trunk of the blade,the geodesic and non- geodesic differential equations are deduced.

并针对叶片主干部分的椭圆柱面，分别推导其测地线和非测地线的微分方程式。

The paper expounds the principle and advantages of disinfection by UV-C radiation, introduces the relative technologies and products at home and abroad, designs elliptic and parabolic cylindroid lampshade of bank paper disinfection apparatus with \! equal path surface \ principle.

论述了紫外C辐照杀菌消毒原理、优点，介绍了国内外有关技术和产品状况，并以"等光程面"原理设计了纸币紫外C消毒器光源的抛物柱面灯罩和椭圆柱面灯罩。

Leaf sheaths loose, strongly compressed, keeled, basal sheaths imbricate; leaf blades broadly linear to lanceolate, flat or folded, 5–20 × 0.6–1.2 cm, glabrous or adaxial surface pilose, apex obtuse; ligule 0.3–0.5 mm. Racemes 2–5, digitate or subdigitate, 4–10 cm, only slightly diverging; rachis glabrous. Spikelets oblong-lanceolate, 2–2.7 mm, pilose or glabrous, apex acute; upper glume and lower lemma 2–4-veined, midvein absent, laterals marginal; upper lemma pale, oblong-elliptic, shorter than spikelet, obtuse with an apical tuft of hairs; stigmas pale.

叶鞘松散，强烈压扁，龙骨状，基部的鞘覆瓦状；叶片宽线形到披针形，平的或折叠， 5-20 * 0.6-1.2 厘米，无毛的或正面具柔毛，先端钝； 0.3-0.5毫米外消旋体2-5的叶舌，指状或者4-10厘米，subdigitate，只是稍微分歧；轴无毛长圆状披针形的小穗，2-2.7毫米，具柔毛或无毛，先端锐尖；上面颖片和更下部的外稃2-4－脉，中脉无，边缘；浅，长圆状椭圆形的上面外稃，短于小穗，钝具一顶端1束毛；柱头浅。

Based on the method of Dyadic Green s functions,the radiation patterns of the microstrip antennas printed on the surface of elliptic cylinder are analysised and calculated in this paper.

文中采用并矢格林函数方法，分析和计算了椭圆柱面上微带天线的辐射特性，并讨论了辐射特性随离心率的变化规律。

This paper presents a method for 3D twist blade curved surface design based on the elliptic equations using Partial Differential Equation solutions.

本文以偏微分方程造型为基础，提出了一种基于椭圆型方程的扭叶片三维型面直接设计方法，详细推导了叶型曲面函数，给出了型面方程的求解及其前后缘修正。

Leaves regularly alternate; stipules ovate to triangular, undivided, without glands; petiole much shorter than blade, without glands; leaf blade oblong to elliptic to ovate, abaxial surface paler than adaxial one but not whitish and not papillate, with 0-10 strictly marginal glands on each side, basal glands slightly larger but very similar, adaxial surface eglandular, base obtuse to slightly attenuate, margin serrate with teeth 3-5 mm apart, apex acute to acuminate.

叶规则地互生；托叶卵形到三角形，没有分开，没有腺；叶柄远短于叶片，没有腺体；叶片长圆形到椭圆形到卵形，背面比正面浅，但不带白色且不具乳突，在每边上各具正好0-10 枚腺体，基部腺体稍微有点大但是非常相似，正面无腺体，基部钝以稍渐狭，边缘有具3-5毫米裂片牙齿的锯齿，先端锐尖到渐尖。

Leaves conferted on the upper part of stem and branches; petiole 5-7 mm long; leaf blade obovate- or elliptic-lanceolate, 3.5-8 cm long and 1.5-2.5 cm wide, apex acute, base obtuse or subrounded, adaxial surface covered with brown minute stiff hairs, abaxial surface pink or dark purple, glabrous.

叶聚生於茎和枝的上部；叶片纸质，倒卵状或椭圆状披针形，长3.5-8厘米，宽1.5-2.5厘米，先端急尖，基部钝或近圆形，上面被褐色小刚毛，下面淡红色或暗紫色，无毛；叶柄长5-7毫米。

Leaves alternate; stipules lanceolate, 4-8 mm; petiole 2-11(-13) cm, pubescent or glabrous; leaf blade ovate, elliptic, oblong or subelliptic,(5-)9-21 × 2.5-10 cm, papery, slightly rough, secondary veins 3 or 4 pairs along midvein, abaxial surface strigillose or pubescent on veins, rarely glabrous, adaxial surface sparsely appressed strigillose or glabrous, base broadly cuneate, rounded, or obtuse, margin denticulate, apex acuminate or caudate-acuminate. Glomerules usually unisexual, sometimes bisexual, in the axils of current and fallen leaves along normal leafy stems, 4-10 mm in diam.; male ones on proximal part of flower-bearing branches; female ones on distal part.

叶互生 托叶披针形，4-8毫米；叶柄2-11(-13)厘米，被短柔毛或无毛；叶片卵形，椭圆形，长方形或，( 5-)9-21 * 2.5-10 厘米，纸质，粗糙的稍，次脉3或4 对沿中脉，背面具短糙伏毛的或短柔毛在脉上，很少无毛，正面疏生贴伏具短糙伏毛的或无毛，通常单性的团伞花序，有时两性，在正常生叶的茎的叶和脱落叶的腋内，直径4-10毫米；在忍受花的分枝的下部上的雄性的；在上部上的雌性的。

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。