查询词典 Natural Selection

Analyed mechanism of expert System, imfering machine of selection of bolt Support, develped Sub-Expert System of bolt support Selection.

分析了专家系统推理机制，建造了锚杆支护选型推理机，开发了锚杆支护选型专家系统。

Fist of all, lifespan of bucks has to be limited, the number of bucks should be enlarged and allocating mate has to be based on the Mate Selection Index. The risk of selection could be solved by linebreeding or import some bloodline from outside also.

可以采用的方法有：一是限定公羊的使用年限；二是扩大留种公羊的数量；三是使用交配选择指数控制选配。

The results showed that the effects of nutrition level on average daily gain,feed conversion rate and meat quality had no significant difference;on fatback thickness and ham percent were significant.Composite selection index was used to evaluate the effect of nutrition level on finishing pigs,the results showed that the effect of high nutrition level on crossed finishing pigs was the best during body weight of 35~100 kg. Nutritional level ; Finishing pigs ; Growth performance ; Carcass quality ; Meat quality ; Comprehensive selection index

本试验将日粮消化能、蛋白质和赖氨酸设计高、中、低三个档次，以杜洛克公猪与莱芜猪合成系母猪配套生产的杂交猪为对象，进行了饲养试验和屠宰试验，旨在探讨日粮营养水平对杜莱杂交商品猪的生长性能及肉品质的影响，为养猪生产提供参考。1材料与方法1.1试验猪选择与分组选择出生日龄基本一致、生长发育良好、体重35 kg左右的杜莱断奶仔

Firstly, because the triangle constrained matching propagation begins with the initial corresponding triangulations formed by a few seed points in the stereo pairs, this dissertation studies the affects of different numbers and different distributions of seed points on the image matching results through experimental analysis, and proposes a seed point selection strategy for different image texture conditions, an automatic selection algorithm is also designed that gives good distribution quality for a defined number of seed points.

首先，针对匹配传播过程中的种子点选取问题，通过实验分析研究了不同数量与分布的种子点所构成的初始三角网对匹配结果的影响，进而提出了不同影像条件下的种子点选取策略和一种自动提取一定数量、满足一定分布均匀度的种子点自动选取算法；其次，研究了海量数据情况下同名三角网的快速构建、数据组织存储与局部动态更新的方法；在此基础上，本文提出了随机传播、基于三角形拓扑关系的邻近传播和顾及纹理特征的自适应传播等三种传播策略，分别介绍了其详细的实现算法，并通过实验分析对这几种传播策略进行了比较，实验结果证明自适应传播方法在匹配的可靠性上最优。

And fluency of using it. Their good adaptation to C.G. software has been reflected from the usage of brush, selection, view, layers, copy and selection of colors, and the styles of paintings.

在学生适应绘图软体情况良好方面，可以反映在笔刷工具的应用、圈选工具的应用、缩放检视工具的应用、色彩的复制、色彩的挑选、著色方式与图层的应用上。

As China's textile industry vosges leading group to cooperate with us to explore the use of this technology for the enterprise grass-roots management staff selection, training, etc., of the tool is "the quality of enterprise management personnel evaluation system"(RSC, SPSS12 version), the actual operation of enterprises and the selection of objects in accordance with the actual situation of an increase of part of the contents.

作为我国家纺业龙头的孚日集团与我们合作，探索利用此项技术进行企业内部基层管理人员甄选、培训等，研究的工具是《企业管理人才素质测评系统》（RSC，SPSS12版），实际操作中根据企业和选拔对象的实际情况增加了部分内容。

Molecular cloning and expression of FKN/CX3CR1 and their mutated counterpartsTo study the evolutionary rule in function from Old World Monkey to Homonid and the role of negative selection sites, possible Darwinian positive selection sites and deletion mutation, full-length FKN/CX3CR1 and mutant gene were obtained by overlapping extension PCR and site-directed mutagenesis.

FKN／CX3CR1分子及突变子的基因克隆和表达克隆旧大陆猴和人猿超科7个物种FKN、CX3CR1全基因及其突变体并进行体外表达，为后续观察FKN／CX3CR1在高级灵长类物种进化过程中免疫学功能的演变并在功能上验证FKN／CX3CR1协同进化以及研究上述位点对FKN／CX3CR1介导的免疫学功能的影响奠定分子生物学基础。

By the usual Darwinian dynamics of natural selection, the mutation of altitude acclimation comes to dominate the village gene pool.

根据达尔文自然选择的惯例，适应高地生活的变种就来主宰村子的基因库了。

Adaptation is the result of natural selection.

适应是自然选择的结果。

In this paper, proposed a evolution strategies to eeg source localization, which based on the agamogenesis natural selection of biology.

该文从无性生殖的生物在自然界中优胜劣汰的进化模式中得到启发，设计了基于进化策略算法来进行源定位。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。