查询词典 mutation

Firstly, the authors create various initial colonies and introduce quinary coding strategy to improve searching speed. Then, they adopt random selection mechanism without reimbursement to prevent premature convergence. Twopoint crossover and multipoint mutation are adopted to extend searching range of model space and to keep individual diversity.

首先，产生多样化的初始群体，引入五进制的编码策略提高搜索速度，然后采用无退还随机选择机制防止收敛早熟，采取两点交叉及多点变异方案以扩大模型空间的搜索范围和保持个体的多样性。

In Darwin's days they new nothing about genetics, and certainly nothing about the unimaginably destructive nature of random mutation.

在达尔文的日子，因为新什么遗传学，当然什么是难以想象的毁灭性质的随机突变。

Objective To study the mutation of P53 gene an d ras gene in stomach cancer.

目的 研究胃癌组织中P53基因和ras 基因的突变情况。

Ras refers to a family of genes whose mutation stimulates the growth of several types of cancers.

ras基因是指一个家庭的基因突变，其刺激增长的几种类型的癌症。

Objective:To explore the mutation of ras oncogene in Hasakh patients with esophageal cancer and its clinical significance.

目的：探讨新疆哈萨克族食管癌组织ras基因的变化及临床意义。

Ve:To investigate the relationship between ras gene mutation and tissue differentiation in carcinoma of urinary bladder.

目的：探讨ras基困突变与膀胱癌组织分化之间的关系。

The amino acid changes were similar to B/Taiwan/3143/97, in which the mutation was related to receptor binding site of the HA gene.

而本实验的目的则是将1999年冬至2001年春台北荣总病毒室所分离到的B型流感病毒作基因型演化分析及神经亲合性试验。

The research progress of redifferentiation of dedifferentiated thyroid carcinoma by up-regulation of thyroid iodide-metabolizing genes expression and suppression of BRAF mutation is reviewed in this paper.

文章就通过上调甲状腺碘代谢相关基因表达和抑制BRAF基因突变而使失分化型甲状腺癌再分化的研究进展作一综述。

Breeding technology of industrial useful microorganisms was developed from conventional mutation and screening technology to mutagenesis breeding ,cross reeding,metabolic control breeding,gene engineering breeding and so on.

工业有益微生物的育种技术已从常规的突变和筛选技术发展到诱变育种、杂交育种、代谢控制育种和基因工程等。

Determination of cytotoxicity,cell inoculation efficiency,relative survival rate and mutation frequency was performed.

结果：随着AA剂量的增加，L5178Y细胞的相对存活率和悬浮生长率均明显降低。

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。