查询词典 elliptical

This paper proposed to use elliptical Gabor filter with least redundancy to convolute with palmprint,sub-bands with 4 scales and 6 directions are obtained,calculate the average and deviation of every sub-band,48D texture feature is extracted,and normalize the 48D feature in the whole database,finally use distance of absolute value to measure the difference between two feature vector.The result shows the arithmetic proposed by this paper has a little high retrieval accuracy.

本文采用最小冗余度的椭圆Gabor滤波器组对掌纹图像滤波，得到4个尺度6个方向的子带，计算每个子带的均值与方差，得到48维的纹理特征，在整个数据库中对48维特征进行归一化，最后采用绝对值距离衡量不同特征向量间的差异。

A cylindrical surface or solid all of whose sections perpendicular to the elements are elliptical.

角棱镜是由3个互相垂直的反射平面组成。

In winter,nuclear of GTH cells were elliptical and a small number of secretory granules scattered around nucleolus. Number of secretory granules in STH cells were relatively small, nucleolus distorted, activity of synthesis and secretion decreased. Secretory granules in TSH cells cytoplast were relatively small.

冬季，GTH细胞核为椭圆形，有少量的分泌颗粒散布在细胞核的周围；STH细胞分泌颗粒数量较少，胞核变形，合成和分泌活动比较微弱；TSH细胞胞质中的分泌颗粒相当多。

In winter,nuclear of GTH cells were elliptical and a small number o f secretory granules scattered around nucleolus. Number of secretory granules in STH cells were relatively small, nucleolus distorted, activity of synthesis and secretion decreased. Secretory granules in TSH cells cytoplast were relatively small.

冬季，GTH细胞核为椭圆形，有少量的分泌颗粒散布在细胞核的周围；STH细胞分泌颗粒数量较少，胞核变形，合成和分泌活动比较微弱；TSH细胞胞质中的分泌颗粒相当多。

Based on the Von Karman theory of thin plate with large deflection, the nonlinear dynamic differential equations of elastic elliptical plate are first established.

然后应用Galerkin技术和KBM法求解了此微分方程，并讨论了有关参数对粘弹性椭圆板动力学行为的影响

Analytic description of disc diffraction model is obtained using elliptical pits model and Babinet principle.

基于衍射理论，采用更接近光盘实际情况的椭圆型信息符模型并利用光盘的线性叠加原理得到光盘衍射模型的解析表达式，对三种主流盘片的盘片倾斜对循迹系统产生的影响进行定量的计算与分析。

Astronomers have spent many decades trying to measure basic galaxy properties such as age, mass or dustiness that may give us some clues as to how they formed and evolved and what precisely the connection between spiral and elliptical galaxies is.

天文学家花费了几十年试图去估量基本的星系特性，比如年龄，质量或者含尘量，这些可能会给我们关于星系是如何形成和发展的以及椭圆星系和螺旋星系之间的精确联系是怎样的一些线索。

With the elastic strain energy increased, the arrangement orientation increased, from spherical-shaped precipitates to elliptical plate.

随共格畸变能的增大，沉淀相分布的取向性越来越明显，由原来离散分布的等轴粒子状向椭片状转变。

A small electric bulb was used as a light source, the reflector being an elliptical glass screen.

一个小电灯泡作为光源，反射器是个椭圆形的玻璃屏。

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。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。