查询词典 vectors

Then the vectors were transformed to Torenia fournieri to validate the function of the promoter.

该启动子的克隆对于研究蓝猪耳胚珠TfPLC1基因的表达调控及功能具有重要意义。

To clone the site A of S gene of transmissible gastroenteritis virus and to construct the prokaryotic expression vectors of site A.

对猪传染性胃肠炎病毒S基因A抗原位点进行克隆和原核表达载体的构建。

Permanent magnet synchronous motor driven by triphase sinusoidal current is research object in this paper. On the basis of analysis of the structure, movement principle and math model of PMSM, Fundamental theories and structure of the system of PMSM alternating current servo systems based on DTC are discussed. Then Simulation models of traditional PMSM DTC and PMSM DTC based on vectors subdivision are established separately.

本文以三相正弦波驱动的永磁同步电机为研究对象，在分析永磁同步电机结构及数学模型的基础上，系统阐述了基于直接转矩控制的永磁同步电机交流伺服系统的基本原理和系统构成，并在MATLAB仿真环境下分别建立了传统直接转矩控制和基于矢量细分算法的直接转矩控制系统的仿真模型。

On the other hand, comparing the zeniths of vectors in.the two umbrae, these in the upper layers are more vertical than those in lower layers on average.

另一方面，对比了黑子两个本影在上下两层大气的磁倾角分布显示，在上层大气本影磁力线更竖直一些。

The stratification shows, as expected, that for this 8 sunspot, its stratification of the vectormagnetic fields has the main features of this kind: one umbra with positive polarity and the other with negative polarity; and the magnetic field vectors in the penumbra part between the two umbrae are more horizontal than those in the umbrae.

反演得到的δ型黑子的矢量磁场两层结构拥有δ型黑子的主要特征，两个黑子本影磁场极性相反，且本影之间的半影磁场的磁倾角很大，也就是在半影中磁力线几乎水平分布。

The stratification shows, as expected, that for this 8 sunspot, its stratification of the vector magnetic fields has the main features of this kind: one umbra with positive polarity and the other with negative polarity; and the magnetic field vectors in the penumbra part between the two umbrae are more horizontal than those in the umbrae.

反演得到的δ型黑子的矢量磁场两层结构拥有δ型黑子的主要特征，两个黑子本影磁场极性相反，且本影之间的半影磁场的磁倾角很大，也就是在半影中磁力线几乎水平分布。

Deep well drillstring is scatter to umpty dimensional beam unit along axes. Lengthwise vibration equation of whole drillstring is found with three-dimensional dynamic finite element method. With this equation and improved Ritz Vectors, dynamic response analysis and calculation of drillstring is carried out, also, the method of vibration model splice is used.

将深井钻柱沿轴线离散为若干个空间直粱单元，用三维动力有限元法进行振动分析，得到整体钻柱结构的纵向振动方程，用改进的Ritz向量法及振型迭加法对钻柱进行动力响应分析和计算。

Orientalis in red blood cells from an infected calf was isolated. cDNA was synthesized by reverse transcriptase, amplified by PCR and ligated into λTriplEx2 vector. The recombined vectors were packaged and the unamplified cDNA library was constructed.

用东方巴贝虫感染牛，提纯红细胞内虫体的总RNA，反转录合成cDNA， PCR扩增后将其连接于噬菌体载体（λTriplEx2），通过体外包装，建成东方巴贝虫cDNA文库，并进行扩增。

A character-codes model based pattern recognition method by using amplitude data of targets frequency response is proposed after the establishment of high frequency response equation of radar targets. The method uses the same unvariant character-codes to express the same target of different angles and uses sequential separating of regions of target's reference variables to obtain multiple coding vectors of all regions for every target. The category and pose of target can be determined after a two-staged classification processing such as coding processing of target range profile data and errors correcting processing of coded data. The two-stage classification results are used to target identification as posterior hypothesis to be tested by sufficient convincing and necessary convincing. The character-codes model based pattern recognition method is also adaptive to variation of target angles and controllable in error probability. Time-consuming and complicated iterative computation is not necessary in the train process of pattern recognition.

首先建立了雷达目标的高频频率响应方程，这种方程将目标多散射中心理论与目标局部谐振理论有机地结合起来；进而提出了目标多频响应结构成像方法，这种方法将瑞利区频率响应或谐振区频率响应曲线的不同部位用各种不同的近似方法去逼近，通过特征谱估计方法将目标的局部频响特征与宽带距离响应特征结合起来；然后提出了一种基于姿态角变化区域的序贯划分与多模匹配的特征编码识别方法，这种方法具有能适应目标姿态角的变化以及能控制识别的差错概率α等优点，在目标识别时只需要目标在少数有限个频率激励下的幅频响应数据。

The genome of avian adeno-associated virus was cloned for construction of gene transfer vectors. AAAV was propagated in special pathogen-free chicken embryo using the chicken embryo lethal orphan virus as the helper virus. The double-stranded genomic DNA was extracted from precipitated AAAV viron and cloned into pCR 2.1 vector.

为了克隆禽腺联病毒(Avian adeno-associated virus， AAAV)全基因组用于构建基因转移载体研究，以鸡胚致死孤儿病毒作为辅助病毒与AAAV共接种SPF鸡胚进行AAAV的增殖，将AAAV约4.7 kb双链基因组DNA与pCR2.1载体连接，构建了含AAAV全基因组的重组质粒pAAAV并进行了测序。

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。