特徵

The MS showed that the ratio of relative abundance ratio of two main Se isotopes is about 2:1, which can give important information for identifying molecular or fragile ions of selenium.

所有化合物均可获得特徵质谱，表现出含单个硒原子的分子离子或碎片离子特徵峰簇，硒的两种主要同位素在峰簇中表现为主要峰M与(M-2)的相对丰度比约为2：1，可为鉴定含硒分子离子或碎片离子提供重要信息。

Americanization was a distinctive feature of the 20th century; the 21st-century global citizen's identity will have Chinese characteristics.

美国化是20世纪的主要特徵；显然，中国化将成为21世纪的重要特徵。

They were pioneers in identifying the fundamental features of formal organizational structure, audaciously clinging to the view that all organizations contain certain common structural characteristics.

他们首先对正式组织结构的基本特徵进行了定义，并大胆地推导出所有组织都有的普遍结构特徵。

By summing up the cyclicity, rock association and occurrence of volcanic rocks with their overlying and underlying contact relations and forming environment, and concerning the research results of isotope chronology and biostratigraphy, the Yixian formation of the working area may be subdivided into four members.

综合火山岩的旋回性特徵，岩石组合、岩石产出特徵，不同岩石组合的上、下接触关系和岩石形成环境的分析结果，结合同位素年代学及生物地层学的研究成果，区内义县组被划分成了4个岩性段。

We also give a simple formula to determine the characteristic vector of L^{+} from the characteristic vector of N.

我们也会给定一个简易的运算式，它能够从N的特徵向量来导出G^{+}的特徵向量。

S text is now supposed to be the minimal unit of language communication, the dynamic features of texti.

bstract 语言的动态性不仅仅是历时研究的特徵，而且也是共时研究的特徵。

The method consists of tree steps: enhancement, contour segmentation, and feature selection. In this study, our method is able to enhance the signals from masses and extract the useful contour feature from the segmented regions. The ruler method of fractal dimension computed for each case was used to form a contour feature. These feature measures can be input to a classifier based on sorting. The experimental results show that our scheme can provide useful contour extraction for spiculation structures in mammographic images.

我们的研究目的是在乳房的X光影像中选取肿瘤怀疑的区域，分成三步骤，影像前处理、轮廓分割、特徵选取，找出具有星状物轮廓的肿瘤，我们的方法首先强化肿瘤组织，接著有效分割出肿瘤的轮廓，最后利用规则式的碎形维度计算其轮廓特徵值，接著排序分出肿瘤轮廓类别，实验结果证明我们的方法可有效侦测出星状物肿瘤轮廓及其特徵。

With the new and improved user guidance, you can create patterns faster, modify them later, and reuse your user-defined features such as pockets and slots – far beyond the predefined machining features already included in CoCreate Modeling.

新一代的特徵阵列功能有了全新强化的导引预览功能，让您可以更快速建立特徵阵列、重新定义以及重复利用您自行定义的特徵。

The objective of this course is to introduce taxonomic characters and phylogeny during each orders of Class Insecta. Lectures include the history, catalogue, nomenclature, identification, description, type specimen, external morphological characters of 32 orders, systematic, phylogeny and theory of entomo-taxonomy.

本课程主要介绍昆虫纲各目的分类特徵及分类系统；课程内容包括昆虫分类学之发展史、分类阶层、昆虫命名、昆虫鉴定、特徵描述、模式标本、32目各目之外表形态构造及其诊断鉴定特徵、分类系统及分类学说等。

First, the character clustering algorithm regards the character as our features and then it can cluster these sentences of our target words to the correct group without any other resources. The average precision is 66.1%. Second, in the concept clustering algorithm of the aggregate computing, we use HowNet as the knowledge base of our feature words and obtain the concepts of these words. We cluster the sentences which have the same or similar concepts of the feature words into the same group. And then we can complement some lacks of the character clustering algorithm. The average precision is 72.3%. Third, regarding the concept clustering algorithm of the sememe distance, we use the sememe distance to compute its concept similarity. It improved similarity measure of the concept clustering algorithm of the aggregate computing. It achieves 81% average precision and gets better cluster quality.

词形分群演算法不受语料资源限制，能将词形相似且词义相近的词汇所属的句子分到同一群，经过人工验证，得到了66.1%的平均正确率；基於集合计算的概念分群演算法使用了知网做为撷取特徵词汇的知识库，透过知网取得词汇的概念，将具相同或相似概念的特徵词汇所属的句子分成同一群，补足词形分群演算法的不足，得到72.3%的平均正确率；基於义原距离的概念分群演算法则利用义原间的距离计算特徵概念的相似度，进一步改善了基於集合计算的概念分群演算法在相似度衡量的问题，得到81%的平均正确率，达到更好的分群效果。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了