查询词典 tangent

And the tangent linear operator of the forward model also exists, which is the same as the resolvent of the tangent linear model derived by the conventional method.

对连续"开关"，代价函数的梯度处处存在的，非线性方程的切线性算子也是存在的，并且与传统方法得到的切线性模型的解算子是一致的。

There are two tangent lines from a point outside the circle, the two tangent lengths are equal.

从圆外一点可以引圆的两条切线，它们的切线长相等。

Closeness of tangent shape space to the curved shape space will assessed by comparing Procrustes distances in the shape space to Euclidean distance in the tangent space.

切线形状空间与弯曲形状空间的的相似度可以通过比较形状空间的Procrustes距离与切线空间的Euclidean距离估算出来。

After extending the definition of tangent distance,we extract the directions of variance of sample sets using Singular Value Decomposition based onthe original image, and use them as the tangent vectors of training sample sets.

本文把切线距离的概念进行了进一步的延伸，在原始图像的基础上，用奇异值分解方法直接提取样本集合中所包含变化的方向，作为训练样本的切线向量。

Some new idea and techniquesabout statistic tangent distance, compute tangent vector based on Singular Value Decomposition,the choice of transformation parameters, dimension decrease based on SVD, feature extractionbased on Mahalanobis distance are proposed in the dissertation.

在统计切线距离、基于奇异值分解求解切线向量、变化参数的选择、基于奇异值分解的降维、基于马氏距离的特征选择等方面提出了自己的新方法。

Etchant surface tension: because everything has a certain amount of surface area so liquid surface as if there is a layer of thin films, this film a molecular-level of attractiveness to shrinking trend, in order to maintain this balance, of surface tension in the gelifen surface must be enclosed in a suitable and surface force tangent to the surface area of, and this is no longer shrink and surface force called the tangent to the surface tension.

蚀刻液的暗地压辛：因为任何物体都有必定的暗地积因此不流体暗地不离仿佛有一层放宽的不厚膜，这层不厚膜具有一股分子级的边向推斥辛，使其有关上的趋向，为了保持这安详的暗地不均，在暗地周界上务必增一不合的和暗地相切辛才能使暗地保持必定的背积，不一再关上，这种和暗地相切的辛叫暗地压辛。

A perpendicular,especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve.

正交一条垂直线，尤指一条相对一条平面曲线的切线垂直线或一条相对一条空间曲线的平面切线垂直线

An element of a vector space .A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve.

正交一条垂直线，尤指一条相对一条平面曲线的切线垂直线或一条相对一条空间曲线的平面切线垂直线

Mathematics A perpendicular, especially a perpendicular to a line tangent to a plane curve or to a plane tangent to a space curve.

正交：一条垂直线，尤指一条相对一条平面曲线的切线垂直线或一条相对一条空间曲线的平面切线垂直线

The main creative achievements accomplished in this dissertation are as follows: 1. A new method to achieve nanometer-scale resolution for grating-based metrology is developed by improving the discrimination power of method of Computer Tangent Subdivision which makes use of the good linearity of tangent function in small range. 2. A new subdivision technique of moire fringes-Dynamic Tracing Subdivision is proposed.

在本论文的研究过程中，所做的主要创造性工作有：（1）提出了利用正切函数在小范围内线性度较好的特点，采用粗、精结合的方式，扩展计算机正切细分法的细分能力，达到纳米级的测量分辨率的新方法；（2）提出了一种新的莫尔条纹信号细分方法：动态跟踪细分法。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。