查询词典 similarity

Concerning model experiment, the authors introduces the methods for the seeking of similarity criterion, the approximative modelling and the verification of model experiment, and practical similarity method is presented for the research of model experiment.

针对模型实验，较详细地介绍了寻求相似准则的方法、近似模化的具体方法和模型实验的验证方法，为今后从事模型实验研究工作提供了实用的相似方法。

Sequencing of this 4.3kb DNA fragment revealed that there is a β-glucosidase gene urnbgl3A with an ORF of 1956bp, encoding product shared 63% identity and 79% similarity with a beta-glucosidase (GenBank NO:AAX16378.1) of uncultured murine large bowel bacterium BAC 31B, and shared 50% identity and 67% similarity with a beta-glucosidase-related glycosidases (GenBank NO:ZP-00308419.1) of Cytophaga hutchinsonii.

测序结果表明在4.3kb的片段上有一个全长为1956bp的ORF，编码一个可能的β-葡萄糖苷酶基因umbgl3A，其编码产物与一个来源於小鼠大肠未培养细菌的β-葡萄糖苷酶(GenBank Acession NO：AAX16378.1)一致性为63%、相似性为79%；与哈氏噬纤维菌的β-葡萄糖苷酶(GenBank Acession NO：ZP-00308419)的一致性为50%、相似性为67%。

The nonlinearity, randomness, determinability, and similarity of hydrological phenomena were analyzed. The self-similarity and fractal characteristic of floods events for a certain duration (e. g. a season of a year) provide a theoretic basis for adoption of fractal theory.

分析水文现象的非线性、随机性和确定性、相似性，以一定尺度范围内洪水表现出的自相似性和分形特性，作为应用分形理论的论据。

Sequence similarity of gyrB sequence from twelve Gordonia type strains ranged from 79.3% to 97.2%, corresponding to 270-41 nucleotide differences while there was only 0.3-3.8% difference in 16S rRNA gene sequence similarity at the interspecies level.

本研究之结果将可利用gyrB基因作为Gordonia菌种快速鉴定之依据，若两菌株之16S rDNA序列相似度大於99.7%，gyrB基因相似度大於97.2%，则判定两菌株为相同菌种。

The analysis of the fungal community similarity between different ecosystem-types showed that farmland soil and shelter-belt soil had the highest similarity, indicating that the soil moniliaceous hyphomycetes in this two ecosystem-types had more common species.

对不同生态类型土壤中淡色丝孢菌的相似性分析发现，农田和防护林带生境的相似性系数最大，说明这两种生境具有较多的共同物种；湿地和城市花园生境的相似性系数最小。

The threshold determining device (10) determines a similarity of each data to others for each data, determines the threshold of the similarity satisfying a predetermined coincidence/incoincidence, for each data, determines an individual threshold distribution of the data for each threshold on each of the data, and determines the threshold common to the entire data, as overall data on the basis of the individual threshold distribution.

阈值确定设备针对每个数据确定每个数据相对于其它数据的相似性，针对每个数据确定满足预定假匹配率的相似性的阈值，针对每个数据的每个阈值确定数据的个体阈值分布，并且根据个体阈值分布将全部数据共用的阈值确定为整体数据。

The notion of weak fuzzy similarity relations,a generalization of fuzzy similarity relations,is used to represent indiscernibility of elements.

为此提出用模糊相似关系和弱模糊相似关系的概念来代替等价关系，同时引入了弱模糊相似关系的相似度概念和相似类概念，定义了基于弱模糊相似关系的广义粗糙集及标准的广义粗糙集上下近似；研究了两对上下近似算子的性质，讨论了3种粗糙隶属函数的性质并验证了它们的性质。

Then , after testing some senior 1 and senior 2 students from Nanjin Foreign School with FCI test tables,the dissertation concludes:﹡The differcences and similarity among the students'.﹡The presence of the preconcept in the students mind which affects the learning preconccept.﹡The latentness of the preconcept.﹡The similarity between the preconcept in the students'mind and the science history.﹡Preconcept and science concept coexist in students'mind.﹡The difficulty for the traditional teaching to change the preconcept.

然后，笔者用FCI测试量表对南京外国语学校的部分高一和高二学生进行了测试，通过访谈及对测试结果的分析，得出了如下结论：﹡学生的前概念具有个体性和一定的共性；﹡前概念广泛存在于学生头脑中，并严重影响物理概念的学习；﹡学生的前概念具有隐蔽性；﹡学生的前概念与科学发展史上的某些概念存在着相似性；﹡前概念与科学概念并存于学生的头脑中；﹡传统教学很难改变学生的前概念。

Results The complete 16800 bp mtDNA was separated from both samples, and the Cytb gene with 310 bp segments was amplified by PCR and the sequence indicated that the homologous similarity was 99% with sable Martes zibellina L.(GenBank: AB026109.1) and it was 45% with other animal similarity.

结果：新鲜的貂心和肝组织提取出16 800 bp的mtDNA，并能扩增出310 bp大小的Cytb基因，测序结果显示貂心Cytb基因与美洲貂(GenBank AB026109.1)同源性为99%。

Furthermore, out of 497 fAFLP markers, 80 special bands were found to be able to distinguish the four groups from each other and may be applied for germplasm characterization and molecular assistant classification of Meretrix clam.4 Molecular classification of two species of Meretrix clam based on fAFLP and ITS sequences4.1 The results of fAFLP maker analysis of S, G and W showed that each group had their own specific loci among which there were 53 special loci in W group, much more than those of S group (14) and G group (21). Among the 53 loci, nine were all dominant loci. These unique loci could be taken as molecular markers to distinguish W from other groups. The genetic similarity indexes and distance matrix between S and G groups were 0.9585 and 0.0424 respectively, but the genetic similarity indexes and distance matrix between W group and S or G group was 0.7939 or 0.7941, and 0.2308 or 0.2305 respectively. The results revealed that significant difference existed between W and S or G groups in molecular genetic structure. The phylogenetic trees by the methods of UPGMA and NJ also indicated that S and G populations were very closely related, while W population was a relatively independent cluster, lying beyond the species which S and G belong to.4.2 The internal transcribed spacer region of the rDNA from S group, G group and W group were PCR amplified and sequenced. The results showed that the size of ITS ranged between 1266-1269bp in W group, while those in G and S groups were 1614bp and 1520bp respectively. The GC content ranged 62.32-62.62% in W group while it was 61.77% in G group. The genetic distances between three populations of W group were 0.001～0.003, but it was 0.110 or 0.147 respectively between W group and G group or S group. Phylogenetic trees by NJ method also showed that G group was very closely related to S group, while W group was a relatively independent cluster.

在457个总扩增位点中找出了53个W的特有位点，远多于S群体(14)和G(21)群体，而且在53个特有位点中有9个出现频率为100%的位点，这些位点可以作为区分其它2个群体的特征性标记；S– G群体特有的位点有112个，其中有4个位点出现频率为100%，可作为S– G群体区别于W群体的特征性标记。S群体和G群体间的遗传相似性系数为0.9585，遗传距离只有0.0424，在NJ和UPGMA法构建的亲缘关系的树状图上均首先聚在一起，说明二者的亲缘关系很近，应属于种内群体间的关系；而W与S和G的遗传相似性系数均较小(0.7939和0.7941)，相对遗传距离很大而且十分相近(0.2308和0.2305)，在亲缘关系树状图上单独分出一支，也表明W与S和G群体间的亲缘关系较远。4.2 ITS序列比较分析通过对白壳文蛤、山东文蛤和广西文蛤的ITS序列扩增电泳、PCR-RFLP分析和ITS序列分析发现，W的ITS序列长度在1266-1269 bp，而S和与G的ITS序列总长度分别为1520 bp和1614 bp；从ITS1和ITS2长度来看，W分别为739-741 bp和316-317 bp，S为895 bp和414 bp，G为987 bp和416 bp；而从ITS碱基组成来看，W的GC含量在62.32-62.62%之间，而G群体为61.77%。W的3个壳色不同群体间的遗传距离仅0.001、0.002和0.003，S与G群体间的遗传距离是0.010，说明W群体内变异很小，而S与G群体间已出现明显的遗传分化，但还均属于种内群体间的遗传变异；而W与G和S的遗传距离分别达到0.110、0.147，两个类群差异显著，已远超出种内群体间的遗传变异。

In the days of sailing vessels the crew were afraid they would be becalmed on the ocean.

在使用帆船的时代，船员们担心他们会因为无风而无法在海洋上航行。

As long as foreign donors pay the PA's salary bill, few expect a new intifada.

只要外国继续为巴权力机构的薪水买单，希望发动新暴动的人便寥寥无几。