查询词典 sequence

Every strictly decreasing sequence of elements of the set must terminate after only finitely many steps (assuming the axiom of dependent choice).

注意这个第三点：对于一个良序集，任何严格递减序列都必然是有限的，无论这个集合的基数有多大。

In this paper, the military secrect communication is discussed firstly, in which m-sequence and Des encryption algorithm and their fulfillment in AYR embedded-microchip controller is discussed.

文中首先讨论了军事保密通信，其中讨论了m序列和des加密算法，以及它们在单片机中的实现。

The phylogenetic relation of Ovine Babesia sp in Hebei, Liaoning province and at Lintan, Ningxian in Gansu province China, were analyzed by using 18srRNA sequence.

利用18S rRNA基因序列分析方法，对我国的河北、辽宁两省以及甘肃省的临潭和宁县四个不同地区羊的巴贝斯虫进行分子分类学研究。

Two phylogenetic trees was inferred based on 18srRNA sequence of Hebei, Liaoning province, Lintan, Ningxian in Gansu and the other species of Babesia and Theileria available in GenBank.

结果发现自河北、辽宁、临潭、宁县四个地区分离株建立的进化树上，临潭与宁县的虫株亲缘关系较近，同源性是91.4％；而辽宁与河北的同源性是95.8％。

One cDNA clone was identified by immunoscreening from a cDNA expression library prepared from Babesia gibsoni merozoite mRNA and its complete nucleotide sequence was 2108bp in length,including one single open reading frame and encoding a 62ku protein which had high homology with that of apical membrane antigen-1(AMA-1) of other species.

通过免疫筛选法，从构建的犬吉布森巴贝虫cDNA基因表达文库中筛选到1个cDNA克隆，此cDNA核苷酸全长2108bp，包含1个完整的开放阅读框，编码蛋白的分子质量约为62ku。

To evaluate the specificity of the PCR, genomic DNA of Theileria annulata,Babesia bovis,Toxoplasma gondii,Leishmania donovani and standard strain of N. caninum were used as a template in the PCR. For determining the detection limit of amplification procedure, PCR was run on a dilution series of genomic DNA from N. caninum（1.562 5-200 ng/ml）. Brain tissue samples of 32 aborted fetuses were detected by PCR-based assay, and 23 blood samples from mothers were tested by ELISA. Results The amplified DNA fragment （350 bp）had a high identity of 98% with the Nc-5 gene sequence of N.

以环形泰勒虫、牛巴贝斯虫、刚地弓形虫、杜氏利什曼原虫以及犬新孢子虫标准株DNA为模板进行扩增以验证PCR的特异性，采用紫外分光光度计测定犬新孢子虫标准株DNA浓度和纯度，取高纯度的DNA样品用灭菌水稀释，分别取不同量的DNA进行PCR扩增，确定PCR方法的敏感性；利用该方法对32份奶牛流产的胎牛脑组织样品进行检测，同时，对其中23份流产的母牛血样进行ELISA血清学检测，以评价犬新孢子虫PCR方法的检测效果。

The genome DNA was extracted from the red blood cells or blood of the infected sheep and goats which include as isolates of ovine Babesia from these different geographic areas. The gene specific primers were devised according to the pubulished 18srRNA sequence at GenBank. The target DNA segment was amplified by polymerase chain reaction, the PCR product was ligated into PGEM-Teasy vector.

用分离于四个地区的羊的巴贝斯虫感染实验动物，自感染羊的红细胞或全血中提取基因组DNA，根据GenBank中已发表的巴贝斯虫18S rRNA序列设计两对羊巴贝斯虫特异性引物，通过PCR扩增目的基因片段，将扩增产物连接到PGEM-Teasy载体中，经酶切鉴定，PCR分析，进行序列测定，结果显示羊巴贝斯虫四个分离株的18S rRNA基因大小为1800bp左右。

At last, the algorithms are combined into an automatic video object segmentation schema, which can separate motion foreground from stationary background and extract video object plane from video image sequence in succeed.

最后，将上述算法结合起来形成一个视频对象分割方案，有效地解决运动前景和背景分离的问题，并成功地完成从视频图像序列中抽取视频对象板的任务。

I am jumping and mixing up the time sequence I know, so I backtrack to ''.

我知道自己把事情的前后顺序都搞乱了，所以最后我回过头来强调为什么事情会发生得那么突然，只是几个星期的事情，尽管我们之间的友谊已经存在有几个月了。

The backwash is the principle sequence used to remove the build up of solids and reduce the transmembrane pressure.

冲洗的顺序原则是用来消除和减少固体建立跨膜压力。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。