查询词典 elliptic surface

The boundary value problems of elliptic equation with equipotential surface conditions have been discussed in domain ΩR n .

在区域ΩRn 中，研究二阶椭圆方程等位面边值问题。

F/D! When the plane that cuts the paraboloid is not perpendicular to the axis, elliptic segment of paraboloid is gained, whose focus is not in the geometric center of the parabolic surface, but is more or less shifted towards periphery, depending on the cut angle.

当抛物面切割面不垂直于轴线，就得到椭圆形的截面，它的焦点不在抛物面的几何中心，差不多移到边缘附近，随切割角度而定。

An elliptical parabola with the same dimensions would have smaller gain by about 1 dB in relation to this analyzed rectangular, with the same efficiency, because of smaller geometric surface of the elliptic parabola.

一个同样尺寸，同样效率的椭圆形抛物线反射器，比这个长方形反射器低大约1dB的增益，这是由于椭圆形抛物面几何表面小一些。

And motivated by many important applications,especially by re-sistivity well-logging in petroleum exploitation,Li Ta-tsien constructed the correspondingboundary value problems with equivalued surface of elliptic equations.

他们基于某些重要的实际应用，建立相应的椭圆型等值面边值问题，尤其是在石油开发中，电阻率测井方面的应用。

Feed positioning in the way that its phase center exactly coincides with the focus of the offset parabola and its direction so that the radiation maximum falls in the geometric center of the elliptic reflector surface are not intuitive at all, as in classic parabolic antennas.

馈源用这样的方式定位——其相位中心准确位于偏馈抛物线反射器的焦点，方向也要准确，这样辐射最大值才能落在椭圆形反射面的几何中心，这样一点也不直观，正如标准的抛物面天线。

Circle of ascus carapace egg comes elliptic, close surface is unripe, base ministry a bit sink child inside, ascus spore white is long and thin, a lot of horizontal strokes are lain between, paragraphs small are cracked ceaselessly when maturity.

子囊壳卵圆形至椭圆形，近表面生，基部稍陷于子座内，子囊孢子白色细长，有很多横隔，成熟时不断裂成小段。

Leaves trifoliolate; lateral leaflets subsessile, petiolule of terminal leaflet 2-4 cm; leaflet blades oblong-lanceolate to elliptic, 5-10 cm, subcoriaceous, glabrous or densely pubescent on abaxial surface when young and pubescent along veins when mature, green adaxially, pale green abaxially, lateral veins 7-10 pairs, base obtuse to rounded, sometimes oblique on lateral leaflets, margin serrulate with hard teeth, apex narrowly acuminate.

叶具三小叶；近无柄的侧生小叶，顶生小叶的小叶柄2-4厘米；小叶叶片长圆状披针形的到椭圆形，5-10厘米，近革质，在背面上幼时无毛的或密被短柔毛的，成熟时短柔毛沿脉，正面绿色，背面浅绿色，侧脉7-10对，基部钝到圆形，有时在侧生小叶上斜，边缘细锯齿具硬齿，先端狭渐尖。

It introduces partial fractions of meromorphic functions, product developments of entire functions, Hadamard's theorem, Riemann Zeta functions, Poisson-Jensen's formula; elliptic functions, including simply periodic functions and doubly periodic functions; algebraic functions and algebroid functions, Riemann surface, Nevanlinna theory, including characteristic functions, the first and second fundamental theorems, growth orders, etc; complex differential equations and complex functional equations, etc.

具体为：亚纯函数的部分分式、整函数的无穷乘积展开、Hadamard定理、Riemann Zeta函数、Poisson-Jensen公式；椭圆函数，包括单周期函数、双周期函数；代数函数和代数体函数、Riemann曲面简介；Nevanlinna理论简介，包括特征函数、第一和第二基本定理、增长级等；复微分方程和复函数方程，等等。在教学内容上充分体现基础性、新颖性。

Finally roud and flat elliptic cross-section samples with uniform shape, smooth surface and unidirectional crystals have been successfully obtained.

最终在等截面送料、变截面送料的条件下分别抽拉出了成形良好，表面光洁，具有单向柱状晶组织的圆形截面、扁椭圆形截面的样件。

Leaves dark to bright green, with inconspicuous veins, surface often crinkled, villous to strigillose, sessile to shortly petiolate; rosette blade 13-30 × 3-5 cm; cauline blade narrowly elliptic to lanceolate or oblanceolate, 5-15 × 2.5-4 cm, base attenuate to narrowly cuneate, margin remotely dentate, usually undulate toward base, apex acute to subobtuse.

把深色的留给翠绿，具不明显脉，通常皱曲，对具短糙伏毛，无梗在具短叶柄具长柔毛的表面；莲座丛叶片 13-30 * 3-5 厘米；茎生叶狭椭圆形到披针形或者倒披针形， 5-15 * 2.5-4 厘米，基部渐狭对狭楔形，边缘稀疏的具牙齿，通常波状对于基部，先端锐尖的对微钝。

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。