成双的

RNA interference represents a common biological phenomenon of double-stranded RNA mediated post-transcriptional gene silencing, which lies in altitude plants and animals. The mechanism of this process is described as that: the dsRNA in cells are cut into double-stranded small interfering RNA. By joining with an effector complex termed RISC (RNA-induced silencing complex), siRNA binds to the cellular RNA with homologous sequences, and contributes to the degradation of the corresponding mRNA, the inhibition of specific gene expression.

RNAi技术是双链RNA(double strand RNA，dsRNA)介导的序列特异性的转录后基因沉默，广泛存在于高等植物和动物中，其机制是细胞内的dsRNA被Dicer剪切成双链的小分子干涉RNA (small interfering RNA，siRNA)与RNA诱导的基因沉默复合物结合，降解与之互补的靶mRNA，特异性抑制靶基因表达。

In the JTB series Roots blower developed by Chongqing Chuangu electromechanical equipment Co., Ltd, the single oil base is changed the dual oil base, this avoids to burning bearing by lubrication no good. The check valve and T-joint are designed into one, this simplifies the installation process and avoids to some troubles. The more important is that all parts of the rotor are the overall, this greatly increased the stiffness and received by the market.

重庆川鼓公司研发设计开发出JTB系列罗茨风机，将单油箱改变成双油箱，从而避免了因润滑加不及时或不到位而烧轴承的现象；将单向阀与T型接口设计成一体，简化了安装工序，克服由此引发的故障；更重要的是全部转子部件采用整体结构，大大提高了刚度，因此受到市场欢迎。

Still in pairs, and separate only as they enter upon

当它们抵达它们留下升降机的那个平台时，它们似乎在步测像生命和意志的东西一样；它们依旧是成双成对的，只是当他们开始"赛跑。"

One, the geminate and didymous phenomenon in university campus is commonner, no matter from which for the respect, the influence of sweethearts both sides all prep above is other classmate or the teacher's influence.

一，大学校园里成双成对的现象比较普遍，无论从哪个方面来说，情侣双方的影响均高于其他同学或者老师的影响。

Most those who let me be not borne is the person arrived to be lovelorn when, what cat ah dog ah pig ah geminate and didymous ground appears in me before, do so that I am like pig dog to be inferior to like.

最让我忍受不了的是人一到了失恋的时候，什么猫啊狗啊猪啊都成双成对地出现在我的面前，弄得我好像猪狗不如似的。

Therefore we should expect the following: Hypothesis 2: Pairwise similarity judgments between product categories may be asymmetrical.

因此我们必须预期以下的：假设2：产品分类间成双成对的相似性判断可以是不对称的。

The stacked athletic, statuesque bodies were eventually paired with scenes from his beloved City of Lights, and the iconic Eiffel Tower.

妖艳多姿的运动，雕塑般的躯体，最终成双成对地组合在《城市之光》的景观中，以及后来的代表作《艾菲尔铁塔》。

In the structures of these complexes, zinc can act as the vertex of the networks in various styles: single atom; dicarboxylate, tricarboxylate or tetracarboxylate bridged binuclear SBU ; and octacarboxylate bridged trinuclear SBU.

在这些配合物的结构中，锌离子可以按多种形式作为网络结构的顶点：单原子，双羧基、三羧基或四羧基桥连的双核锌次级结构单元，八羧基桥连的三核锌次级结构单元，再与配体组装成不同的配位聚合物网络。

From the potential energy profile, it can be predicted that, the dominant channel of this reaction consists of three steps: the two reactants first form a three-membered ring intermediate (INT1) through a barrier-free exothermic reaction of 19.2 kJ/mol; three-membered ring intermediate (INT1) isomerizes to a four-membered ring silylene(P2) via the transition state (TS2) with an energy barrier of 22.8 kJ/mol; four-membered ring silylene(P2) further reacts with ethene(R2) to form a silicic bis-heterocyclic compound (P3), which is also a barrier-free exothermic reaction of 132.2 kJ/mol.

用CCSD//MP2/6-31G*方法研究了单重态二甲基亚烷基硅烯与乙烯生成硅杂双环化合物环加成反应的机理，根据该反应的势能面可以预言，该反应的主反应通道有三步组成：第一步是两反应物（R1， R2）首先生成了一三元环中间体（INT1），它是一无势垒的放热反应，放出的能量为19.2 kJ/mol；第二步是三元环中间体(INT1)经过渡态TS2异构化为了四元环硅烯（P2），其势垒为22.8 kJ/mol；第三步是四元环硅烯（P2）进一步与乙烯(R2)反应生成了硅杂双环化合物（P3），该反应也是一无势垒的放热反应，放出的能量为132.2 kJ/mol。

A mated pair of red-and-green macaws soars above the forest in Bolivia's Madidi National Park.

意译：一成双成对的红和绿色的金刚鹦鹉望上高飞在玻利维亚的Madidi国家森林公园。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。