查询词典 vector

Returns a vector which lists the same lexemes as the given vector, but which lacks any position or weight information.

返回一个带有一列与给出向量相同语意的向量，但是它去掉了所有的位置和权重信息。

Using plant bivalent expression vector pCAMBIA1300 and pBI121 as basic components, a new binary vector harboring tomato chitinase gene Chi3 and tomato β-1,3-glucanase gene Glu-Ac, was constructed through sequential restriction digests and ligations recombination. The two genes driven by CaMV35s promoter were successfully transferred into watermelon cultivars "ZhongYuYiHao" via Agrobacterium-mediated transformation.

构建了同时含有番茄儿丁质酶基因（Chi3）和β-1，3-葡聚糖酶基因的双价抗真菌基因植物表达载体，以西瓜子叶块为外植体，采用根癌农杆菌介导法，将Chi3和Glu-Ac同时导入西瓜栽培种&中育一号&，共获得46株抗性再生植株。

The deleted mutant PAP gene was also cloned into yeast secreted expression pPIC9K vector to form pPIC9K~3, then the vector was transferred into Pachia pastoris GS115 strain. The specific expression protein was secreted into the medium after inducing with methanol and the protein amount reached about 50-60 U g per millilitre measured by UV-absorbed methods in the supernatant of the medium via high density fermentation. SDS-PAGE results showed that there was one protein band in the gel which molecular weight was about 34Ku . The protein could specific react with France PAP antiserum in Western-blotting. Activity tests revealed t

将缺失型PAP基因克隆于酵母分泌型表达载体PPICgK构成重组载体，然后导入毕赤酵母（P8chia nastoris）菌株GSlls细胞中，在甲醇的诱导下，经过酵母高密度发酵进行PAP的表达，经SDS－PAGE分析，结果表明，在培养基上清液中含有一明显的特异性蛋臼条带，大小为34Ku，经Western－blotting分析，该蛋白与法国PAP抗血清有特异性反应，体外活性检测表明该蛋白对TMV的侵染性具有高度的抑制性，说明该 PAP基因在毕赤酵母 GS中也得到了正确表达。

VITS and VIR are OK also vector mode shows, the method outputs the blanking signal of undee oscillograph the Z input that receives vector oscillograph.

VITS和VIR也能够矢量模式显示，办法将波形示波器的消隐旌旗灯号输出接到矢量示波器的Z输入。

Development of vector resistance to pyrethroid insecticides has been reported all over the world,which is a major obstacle to control of vector-borne diseases.

媒介昆虫的拟除虫菊酯抗性已经在世界范围内存在，是控制媒介传染病的一个主要障碍。

The PTZ plasmid vector was changed to plasmid vector pSP72, which contains both T7 and Sp6 promotors for transcription of antisense (T7) and sense (Sp6) RNA probe in vitro. The results revealed the label rate of cRNA probe is high, the hybrids between RNA-RNA are stable, so the background of hybridization is satisfactory.

本实验将质粒载体PTZ转换为带有T7和Sp6两个启动基因的pSP72载体，故可在体外转录cRNA时同时得到意义（Sp6为启动基因）和反意义（T7为启动基因）探针，实验结果表明，cRNA探针标记率高，杂合物稳定，故所获杂交反应背景较为满意。

The BDDcFⅧ gene was ligated behind PUB and 20H1 promotors to create lentiviral vectors pTK161 and pTK162. Meantime lentiviral vectors pTK161' and pTK162' were produced by cloning a green fluorescent protein into pTK151 and pTK152, which was driven by PUB and 2OH1 promotors respectively. Vector supernatant were prepared by using transfer calcium phosphate mediated-cotransfection of 293T cells. The virus vector,△NRF packaging-plasmid, and VSV-G envelope-plasmid was assayed by titers and cFⅧ activity in cell culture supernatant after infection into 293T cells.

用构建携带cFⅧ基因的慢病毒载体pTK161和pTK162（含20HI启动子），同时构建含绿色荧光蛋白的慢病毒载体pTK161'和pTK162'（含2OH1启动子）的方法，分别与包装质粒△NRF、包膜蛋白质粒VSV-G共转染293T包装细胞，将包装好的病毒颗粒再感染293T细胞，检测病毒滴度和培养细胞上清中cFⅧ活性。

The main purpose of this paper is to propose a unsupervised clustering-based method to pre-extract the support vector for training the SVM in light of the theory that the classification facet of SVM is determined by support vector only. By analyzing the limitation existed in current multi-class classification methods, and taking into account comprehensively the separability of the class set of nodes, a hierarchical classification method of SVM binary tree based on tree classifier with optimized overall performance is designed.

针对SVM的分类面仅由支持向量决定的理论，提出一种基于无监督聚类方法来预抽取支持向量，训练向量机；并分析现有多类分类方法所存在的弊端，基于综合考虑节点的类集合可分性，设计一种基于树分类器整体性能最优的SVM二叉树层次分类方法。

In the method, the information of relevance feedback has been utilized to extract the user's concepts of interest. These concepts of interest are then represented in a vector space model as the user profile for machine calculation. With the application of the vector space model of interest concepts, the web pages of the user's interest could be better retrieved to enhance retrieval efficiency.

本研究提出了一套方法，应用了概念撷取的技术，来帮助使用者建立一种短期的使用者兴趣档，希望藉由相关回馈来撷取出一个向量空间模型，用来代表使用者单次检索的资讯需求，以帮助系统检索出，与使用者需求相关的网页给使用者浏览，以降低使用者的浏览时间，提高检索的效率。

On the numerical simulation platform of aerodynamic heating for aircraft with complicated shape developed by our institute, we realized the visualization of two and three-dimension data fields of structured grid and unstructured grid, drawing the nephograms and contours of scalar field and vector plots streamline of vector fields, and show the temperature distribution of structure fields as well.

VISC是利用现代计算机强大的图形功能把科学计算中产生的数字信息转变为直观的、以图像或图形信息表示的、随时间和空间变化的物理现象或物理量，从而形象地反映数据场量的分布情况，并提供交互处理工具与手段。

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。