查询词典 vector analysis

However, Grassmanns system is so abstract and far away from the tradition as not to be understood. Its influence on the foundation of modern vector analysis is not as it should have impacted although it does affect on the axiomatization of vector theory.

遗憾的是，由于格拉斯曼的系统内容过于抽象和偏离传统而难为时人理解，它对现代向量理论的创立没有起到应有的作用，但格拉斯曼的工作却对向量的公理化具有较大影响。

However, Grassmann's system is so abstract and far away from the tradition as not to be understood. Its influence on the foundation of modern vector analysis is not as it should have impacted although it does affect on the axiomatization of vector theory.

遗憾的是，由于格拉斯曼的系统内容过于抽象和偏离传统而难为时人理解，它对现代向量理论的创立没有起到应有的作用，但格拉斯曼的工作却对向量的公理化具有较大影响。

According to the each average value of Change Vector in six years, changes, intra-annual, inter-annual and interlocal, of winter wheat have been quantified. The result shows that the method of Change Vector Analysis is effective for monitoring the winter wheat growth as a new idea, which can integrate most of the feature factors of NDVI curve.

研究表明，变化向量分析方法能有效地从空间域和时间域反映东部五省冬小麦长势变化规律，以单一综合性指标综合了NDVI时间序列曲线的大多数特征参数，为农作物长势遥感监测提供了一种新的研究思路。

Since two curves have the same coordinates and unit normal vector at the contacting point, the problem of the mesh of two planar curves is transformed into an ordinary differential equation by vector analysis. We have the solution to the equation by numerical method and computer calculation. After repeating the way of computing the solution to the equation, we have the contacting points.

因两曲线於接触点的位置相同，单位法线向量相等，由向量分析使曲线接触问题转变为常微分方程式，藉助数值计算与电脑运算得到方程式解，重覆计算方程式的解即可得每一接触点的位置。

This article which points out the importance of the partial derivative of the unit vector through the common mistakes in the vector analysis and carries on the analysis of the practical examples enables the general scholars to have a comprehensive understanding to this question.

通过矢量分析中常见的错误，指出了单位矢量的偏导数在矢量分析中的重要性，并举出实例进行分析，旨在使广大学者对这一问题有一个深刻的认识。

Based on the analysis of the affected extent of the neutral-point potential by every space vector on all kinds of voltage and current conditions the concept named neutral point control grade was proposed for the first time in this paper. The calculation formulas of NPCG were presented as well. Based on NPCG, a novel modulation scheme called optimized 3D space vector modulation (O3DSVM) scheme was proposed in a-b-0 coordinates based on the translation principle of axes, by which the space vectors with higher NPCG values are selected to synthesize the object vector to suppress the unbalance of the neutral-point potential.

该文通过对各种电流电压状态下每个三维空间矢量对直流中点电位的影响进行分析，提出了"中点控制度"(neutral-point control grades，NPCG)的概念，并给出了NPCG的计算公式；基于NPCG，在a-b-0坐标系下提出一种基于坐标平移原理的新型"三维矢量优化选择调制策略"(optimized 3D space vector modulation，O3DSVM)，该调制策略能优化选择NPCG值较高的矢量以合成目标矢量，从而达到最大程度控制直流中点电位偏移的目的。

Based on combination weighting analysis, fuse invalidation diagnosis technology consists of rule layer importance analysis technology, which includes establishing recurrent step layer, establishing contrast matrix, calculating weighting and checking consistency; security importance analysis technology, which includes establishing contrast matrix, calculating weighting and checking consistency; system combination vector analysis technology, which includes calculating system combination vector and checking system combination vector analysis technology.

作者：李科伟，王新政作者单位：（河南江河机械有限责任公司产品研究所，河南平顶山 467337）摘要：基于组合权重分析的引信失效诊断技术，包括由构造递阶层次、构造成对比较矩阵、计算权重及一致性检验等步骤组成的准则层重要度分析技术；由通过构造成对比较矩阵、计算权重及一致性检验得以完成的安全性重要度分析技术；以及由计算系统组合权向量和系统组合一致性检验两步构成的系统组合权向量分析技术。

Based on combination weighting analysis, fuse invalidation diagnosis technology consists of rule layer importance analysis technology, which includes establishing recurrent step layer, establishing contrast matrix, calculating weighting and checking consistency; security importance analysis technology, which includes establishing contrast matrix, calculating weighting and checking consistency; system combination vector analysis technology, which includes calculating system combination vector and checking system combination vector analysis technology.

作者：李科伟，王新政分类：装备与武器作者单位：（河南江河机械有限责任公司产品研究所，河南平顶山 467337）摘要：基于组合权重分析的引信失效诊断技术，包括由构造递阶层次、构造成对比较矩阵、计算权重及一致性检验等步骤组成的准则层重要度分析技术；由通过构造成对比较矩阵、计算权重及一致性检验得以完成的安全性重要度分析技术；以及由计算系统组合权向量和系统组合一致性检验两步构成的系统组合权向量分析技术。

Based on combination weighting analysis, fuse invalidation diagnosis technology consists of rule layer importance analysis technology, which includes establishing recurrent step layer, establishing contrast matrix, calculating weighting and checking consistency; security importance analysis technology, which includes establishing contrast matrix, calculating weighting and checking consistency; system combination vector analysis technology, which includes calculating system combination vector and checking system combination vector analysis technology.

作者：李科伟，王新政分类：装备与武器上传者：ZCOM网友作者单位：（河南江河机械有限责任公司产品研究所，河南平顶山 467337）摘要：基于组合权重分析的引信失效诊断技术，包括由构造递阶层次、构造成对比较矩阵、计算权重及一致性检验等步骤组成的准则层重要度分析技术；由通过构造成对比较矩阵、计算权重及一致性检验得以完成的安全性重要度分析技术；以及由计算系统组合权向量和系统组合一致性检验两步构成的系统组合权向量分析技术。

Methods(1) Construction of plant expression vector containing RS geneThe cloning vector pT-RS was constructed containing RS gene extracted from the leaf tip of Vitis vinifera by PCR amplification and RS sequence was identified by PCR amplification,enzymes digestion and sequence analysis.The plant expression vector containing RS gene was obtained and RS sequence was identified by PCR amplification and double enzymes digestion too.

研究方法(1)含白藜芦醇合酶基因的植物表达载体的构建提取葡萄基因组总DNA，通过PCR扩增得到RS基因，将此基因连接到克隆载体pGEM-T Vector，得到重组载体pT-RS；经PCR、酶切及序列分析鉴定后，将RS基因克隆到植物表达载体pBI121，得到重组载体pBI-RS，用PCR及双酶切方法进行鉴定。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。