条链

Abrin is one of the potent toxins isolated from the beans of plant abrus precatorius.the toxic protein consists of two disulfide-bonded subunits,the a and b chains.the b chain is a galactose-specific lectin that facilitates the binding of abrin to the cell membrane that precedes endocytosis.after entering the cells,the a chain catalytically inactivates 60s ribosomal subunits by removing adenine position 4324 of 28s r–rna,and thereby inhibits protein biosynthesis.

相思子毒素是从豆科植物(abrus precatorius l。)种子中分离的一种细胞毒性蛋白。它由a，b两条链组成，由一个二硫键相联，b链具有半乳糖凝集活性，可与细胞膜上受体结合，帮助a链进入细胞内，a链进入细胞催化失活60s核糖体亚基，从而使细胞蛋白合成被抑制。

No two elements of an antichain can belong to the same chain .

一条反链的两个元素不能属于同一条链。

The method comprises the following steps: acquiring the parallel link information between a first routing device and a second routing device; selecting at least one link from the parallel links between the first routing device and the second routing device as a main link according to the parallel link information; and transmitting the message between the first routing device and the second routing device through the main link.

本发明方法包括：获取第一路由设备与第二路由设备之间的并行链路信息；根据所述并行链路信息在第一路由设备与第二路由设备之间的并行链路中选择出至少一条链路作为主链路；通过所述主链路传输所述第一路由设备与第二路由设备之间的报文。

Replicas of DNA are made when the double helix unwinds as a result of helicase enzyme action and the separated strands serve as templates along which complementary nucleotides are assembled through the action of the enzyme DNA polymerase. The result of the two new molecules of DNA each containing one strand of the original molecule, and the process is termed semiconservative replication.

DNA 的复制在解旋酶解开 DNA 链时开始，解开的链作为模板 DNA 聚合酶的作用下结合相对应的核苷酸，最终形成了两条新的 DNA 的链，每一条的链含有一条链原来的 DNA 单链，因此又叫做半保留复制。

In SNA,an endpoint of a link or a junction common to two or more links in a network.

在系统网络体系结构中，链路的端点或网？络中？二条或多条链路的公共结合点。

Either the fading or dying of any sector could correspondingly impose an menace on the part below or above, consequently , to result in the breakdown or collapse of the whole chain-- incurring a ruin as chain reaction to vandalize biodiversity.

任何链节的减少或者消亡都会对这个链节的上一个或者下一个产生威胁，最后导致整条链的破坏和瓦解--进而产生连锁反应破坏生物的多样性。

These guys aren't stuntmen, they're extras, real Goo wa-jai , and I'm supposed to be fighting them with what's supposed to be a bicycle chain but is really made out of foam.

剧情上我应该用一条自行车链打他们，但这条链却是塑料泡沫做的道具。

Double helix model significance, not only means that has verified the DNA member structure, it also has prompted more importantly the DNA duplication mechanism: As a result of the gland fat ling always with the thymine pair, the bird fat ling always with the cytosine pair, this explained that two chain's basic group orders are each other supplementary, so long as had determined a chain's basic group order, another chain's basic group order also determined.

双螺旋模型的意义，不仅意味着探明了DNA分子的结构，更重要的是它还提示了DNA的复制机制：由于腺膘呤总是与胸腺嘧啶配对、鸟膘呤总是与胞嘧啶配对，这说明两条链的碱基顺序是彼此互补的，只要确定了其中一条链的碱基顺序，另一条链的碱基顺序也就确定了。

This research is taking sea perch as the material, and cloning the Syntaxin 1B gene. After extracting RNA from sea perch tissue, we gained the first chain of cDNA by RT-PCR. Then designing a pair of primers according to the sequence of Syntaxin 1B from other organism. Based on the first chain of cDNA cloned from sea perch, the partial sequence of Syntaxin 1B gene is been cloned by using TD-PCR and we received the 751bp fragment at last.

本实验从鲈鱼脑组织中提取总RNA，通过反转录得到cDNA第一条链，根据已克隆出的其它生物的Syntaxin 1B基因序列，设计并合成引物，在妒鱼syntaxin1B基因部分序列克隆与分析 cDNA第一条链的基础上使用降落PCR，进行体外扩增妒鱼 Syntaxin IB基因的部分序列，得到长度为75 lbP的片断，在胶中洗脱下该片段，与pMD 18一T载体链接，转化入感受态细胞，挑取阳性克隆扩大培养，提取质粒，经HindIH和x一gaH两内切酶消化得到75 1 bp的片断，证明链接成功。

Enzyme that separates the two strands of the double helix by breaking hydrogen bonds between the two strands.

通过打断两条链之间的氢键而将双螺旋的两条链分开的酶。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。