查询词典 partial linear differential equation

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

Linear CO desorbs earlier and quicker than twin and bridged CO with the progressive heating from 25 to 300°C at 0.1MPa, and the three types of adsorption disappear at 265℃.At 205℃ the adsorption amount of linear CO and bridged CO increases with the pressure from 0.1 to 3.0MPa, but the adsorption amount of bridged CO is more than that of linear CO. At 0.1MPa and 25℃, CO2can decompose into CO and then CO adsorbs quickly, namely, CO2→CO+O, but the wave numbers of the adsorptive CO from decomposed CO2 are different from the pure CO, which demonstrates the effect of on CO adsorption. With the pressure of CO2 from 0.1 to 3.0MPa at 25℃, the total adsorption amount increases and the band at 2052cm^(-1) shifts towards higher frequency.

压力保持0.1MPa，温度由25℃升至300℃时，线式比桥式先脱附，至265℃时，3种吸附基本脱附完全；当温度维持205℃不变而压力逐步由。0.1升至3.0MPa时，线式吸附增量较少，桥式吸附增量较多，CO2在0.1MPa，25℃时就能发生快速的解离吸附，即CO2→CO+O，其吸附行为表现为CO的线式吸附，但吸附峰与纯CO吸附时不同；当温度稳定在25℃而压力逐步升至2.5MPa时，不仅CO2吸附量增大，而且其2052cm^(-1)吸附峰有向高波数移动的趋势。

One-dimensional linear projection methods includes Eigenface method and Fisherface method and so on.Two-dimensional linear projection methods includes two-dimensional principal component analysis and two-dimensional linear discriminant analysis,as well as a series of their expanded methods and so on.

其中，基于一维线性投影的方法包括特征脸方法和Fisher脸方法等；基于二维线性投影的方法包括二维主成分分析和二维线性判别分析，以及它们的一系列拓展算法等。

The linear boundary element method make boundary element into linear segment from linear interpolating function.

线性边界元法是在常数边界元法的基础上，从线性插值函数出发将边界单元按线性分布来进行处理的一种数值方法。

A novel least squares algorithm based on anti-WKB method and linear segment interpolation,which is called prediction-verification method, is proposed.This method takes the values calculated by anti-WKB and linear segment interpolation as approximation,then uses the least squares fitting,and after that compares the linear segment interpolation based on the anti-WKB method with it.

提出一种基于反WKB法与分段线性插值的最小二乘拟合方法来确定离子交换玻璃波导的横向折射率分布，它将反WKB法与分段线性插值所计算出的结果作为近似值，然后进行最小二乘拟合，并与基于反WKB的分段线性插值方法进行比较。

Then gives judging the vector linear relevance by the value of determinant, the order of matrix, the solution to uneven sublinear system of equations, Cramer principle, linear substitution, the theory of matrix and so on in the linear space and Ou Shi space, produces 13 equivalences of the vector linearity relevant under the dissimilar condition, and elaborates the widespread application of the vector linearity relevant through concrete examples.

在线性空间、欧氏空间中给出了运用行列式的值、矩阵的秩、齐次线性方程组的解、Cramer法则、线性变换、矩阵理论等知识来判定向量的线性关系，及不同条件下向量线性相关性的十三个等价命题，并通过具体例题阐述向量线性相关性的广泛应用。

Leaves linear-oblong, linear-lanceolate, or linear-obovate; nectar scales 0.4-0.7 mm.

叶线形长圆形，线状披针形，倒卵形或线形；花蜜的鳞片0.4-0.7毫米 15

The main characteristics of linear compression is on various halftoning section of the adjustment of the scale, linear compressed and does not represent a real Visual scale compressed because it is non-linear curve D－Y, after the compression, the light to mediate human eyes not easily distinguished, producing a flat "" ash.

线性压缩的主要特征是对各阶调段等比例的调整，线性压缩并不代表真正的视觉上的等比例压缩，因为D－Y曲线也是非线性的，经过这种压缩后，亮调处人眼不容易辨别，产生&灰平&现象。

The main characteristics of linear compression is on various halftoning section of the adjustment of the scale, linear compressed and does not represent a real Visual scale compressed because it is non-linear curve D－Y, after the compression, the light to mediate human eyes not easily distinguished, producing a flat "" ash.

线性压缩的主给特征是不对各阶调段等比例的调零，线性压缩并不代表假冒的触觉上的等比例压缩，因为D－Y弧线也是否线性的，经功这种压缩后，平调停人眼不便当鉴别，爆不收&灰陡&本体。

Leaves linear to oblong-linear, broadly lanceolate, or oblong (scale-like leaves sometimes present at base of stem); inflorescence racemelike; bracts linear, leaflike.

叶线形到长圆状线形，宽披针形，或长圆形（鳞片状叶有时宿存在茎基部的；花序总状花序状；苞片线形，叶状。

The witness also told the jury at the Royal Courts of Justice in London that he saw a paparazzo fighting with a member of the public who was trying to stop him taking pictures in the minutes before the emergency services arrived.

他还告诉在伦敦皇家法庭的陪审团，在急救服务到来之前，他当时看见一个狗仔队正和一群阻止他拍照的人打架。

The entire N／C program on a tape is made up of an accumulation of these successive data blocks.

纸带上的整个数控程序由这些连续数据单元连接而成。