查询词典 genetic code

Combining genetic algorithm and tabu search algorithm can improve the performance of genetic algorithm.

将禁忌搜索算法和遗传算法结合，增强了遗传算法的全局搜索能力。

The genetic relationship and genetic diversity of genus Tagetes could be assessed efficiently by ISSR markers.

利用ISSR标记技术可较准确分析万寿菊属材料间的亲缘关系及遗传多样性。

Genetic type of Telangiectasia mostly familial genetic.

遗传型红血丝多是家族性遗传。

Random Amplified Polymorphic DNA was used to evaluate intra-and inter-strains genetic diversity and the special genetic marker of frog Rana tigrina rugulosa arid frog R.

本文应用RAPD技术，研究了中国虎纹蛙和泰国虎纹蛙R。

The results of genetic analysis, such as GC content, transition/transversion rate ratios, synonymous substitution rates, indicated that the br fragments with high level of genetic divergence are faced with both purifying selection and bias mutation pressure.

随后的遗传分析，包括GC含量、转换与颠换的比率、同义突变率分析，表明br基因间具有较高的遗传分歧程度，并面临着净化选择和偏倚突变压的双重抑制。

Part I :Multiple familial trichoepithelioma: Analyses of Clinical and Genetic Features Objective To study the clinical and genetic features of multiple familial trichoepithelioma in Chinese.

第一部分：多发性家族性毛发上皮瘤的遗传特征分析目的了解中国人多发性家族性毛发上皮瘤的临床表现和遗传特点。

Because the traditional PID exists the shortcomings of unadjustment of parameters and inferior real time nature,the Genetic BP neural networks PID control algolithm is proposed in the dissertation. The Genetic algorithm and BP neural networks are introduced to optimize three control parameters.

由于传统PID控制算法存在控制参数不可调，控制系统实时性差等缺点，本文提出遗传BP神经网络PID控制算法，用遗传算法和BP神经网络对PID控制参数进行在线优化。

In this paper,an improved genetic algorithm is proposed to overcome the shortage of early convergence and stagnation in the traditional genetic algorithm,which is based on unconvertible rate of crossover operator and mutation operator.Moreover,the user page interest measure threshold is introduced into the association rules mining.

针对传统遗传算法在提取关联规则问题时常采用固定染色体交叉概率和染色体变异概率，容易出现早熟、收敛速度较慢的问题，提出了改进的遗传算法，并在关联规则的提取中增加了用户页面兴趣度这一阈值，成功地运用到某商业网站服务器日志挖掘。

Secondly,proposed an new scheme that the double population genetic algorithm used the self-adaptable crossover operator and mutation operator according to the shortage of early convergence and stagnation in the traditional double population genetic algorithm based on unconvertible rate of crossover operator and mutation operator.

摘 要：介绍了图像关联规则的相关概念，描述了传统的双种群遗传算法的执行过程；针对采用固定染色体交叉概率和染色体变异概率容易出现早熟、收敛速度较慢等问题，设计出了能自适应调整的染色体交叉算子和变异算子。

Low resolution was obtained in genetic variation investigation of different cowpea cultivated germplasm of Vigna unguiculata based on ITS sequence data, while good results could be obtained in genetic diversity and phylogeny of differern species of genus Vigna.

RAPD可以用于种下的遗传多样性研究。但基于随机引物的RAPD-PCR扩增，受实验中各种因素的影响较大，导致数据获得的重复性不是很好、且不可移植。因此只能作为一种辅助方法。从技术上讲，为保证实验条件的一致性，应该一次PCR反应中对所有的研究对象进行扩增，并在扩增片段的电泳分离检测时尽量保持条件的一致。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。