双分子的

Starting from 3-benzoyl-5-formyl-indolizine, 3-benzoyl-5-(2'2'-diacetylethenyl)-indolizines and analogs were obtained by the 〓mediated aldol condensation or Wittig reaction. These compounds,promoted by low-valent titanium, gave highly functionlizedcycl[3,2,2]azine derivatives. The coupling reaction proceeded betweenthe carbonyl group and the carbon-carbon double bond, a rare example inMcMurry reaction.

我们以3-苯甲酰基-5-甲酰基中氮茚为原料，通过三碘化钐促进的aldol反应和Wittig反应制备了3-羰基-5-羰基乙烯基中氮茚，随后经低价钛还原偶联，没有生成正常的分子内羰基-羰基偶联产物，而是得到反常的羰基与α，β-不饱羰基的双键偶联产物，较高收率地得到了含多官能团的CycI[3，2，2]azine衍生物。

In the pipe application field, high requirements of stiffness and impact strength of the resin require the use of high density polyethylenes with higher molecular weight and bimodal molecular weight distribution.

在管材的应用域上，具高规格的韧性与冲击强的树脂通常需要使用高分子与双峰分子分布的高密聚乙烯为材质。

Chinaberry witches'broom, Ziziphus jujube witches'broom, Mulberry dwarf disease, JWB and Paulownia witches' broom phytoplasmas were identified by comparative studies of PCR amplify of phytoplasmal 16SrDNA、23rDNA and ribosomal protein gene, heteroduplex mobility assay, RFLP of PCR-amplified products (16S rDNA), cloning and sequence analysis of 16SrDNA and rp gene. An efficient procedure for rapid identification and differentiation of phytoplasmas was established, which could identify and differentiate phytoplasma collected from field.

通过对桑萎缩病、枣疯病、酸枣丛枝病、泡桐丛枝病和苦楝丛枝病植原体16SrDNA、23SrDNA和核糖体蛋白基因的PCR扩增、异源双链迁移率分析、16SrDNA PCR产物的限制性片段多态性分析以及植原体16SrDNA和rp基因的克隆和序列分析等比较研究，建立了一种快速确定未知植原体种类和分类地位的分子鉴别与鉴定优化程序；此程序可对田间采集的各种植物植原体样品直接进行快速鉴定和鉴别。

This invention applies mild condition uses substituent group triphenylamine aldehyde or triphenylamine dialdehyde as raw material to react by heating with 2-(5,5-dimethyl-3-vinylcyclohexenyl-2-enylidene)propanedinitrile group to produce the intermolecular charge transfer chromogen with high decomposition temperature, non-coplanar structure, and triphenylamine group.

本发明采用温和的手段，将取代基三苯胺单醛或取代基三苯胺双醛为原料与2-(3，5，5-三甲基环己烯-2-烯亚基)丙二腈共热生成具有高的热分解温度、非共平面空间结构的含三苯胺基团的分子内电荷转移生色团。

Results Eleven proteins, including chymotrypsinogen B1 precursor, carboxypeptidase A1, trypsinogen 2, chymotryptic peptide C, trypsin 1, carboxypeptidase B1, kinesin superfamily proteins 3B, trypsin 2, mitochondria protein gene, elastase 3A and colipase were found to be able to bind to HCV core protein. Conclusions Proteins related with metabolism of glucose and lipid may bind to HCV core protein.

因此我们应用酵母双杂交技术筛选人胰腺细胞 cDNA 文库中的 HCV 核心蛋白结合蛋白基因，为研究 HCV 慢性感染与胰岛素抵抗（ insulin resistance ， IR ）、代谢性疾病之间的相关性及其作用机制，以及进一步研究 HCV 影响糖、脂类代谢的分子生物学机制提供一定的思路和方向。

Electrostatic potential and velocity of water molecules across the channel are also calculated in continuum theory for comparison.

模拟结果显示，双电层内的静电势大体上成线性下降，偏离了连续性理论的预测曲线；分子动力学方法所得到的流速值要比与连续性理论预测结果低50%。

the construction of the double helix model of DNA is the most important biological discovery in 20th century, and it has laid the foundation for modern molecular biology successfully.

DNA 双螺旋模型的建成是20世纪生物学领域极为重要的发现，它为现代分子生物学的发展奠定了基础。

the construction of the double helix model of DNA is the most important biological discovery in 20th century, and it has laid the foundation for modern molecular biology successfully.

DNA双螺模型的建成是20世纪生物学领域极为重要的发现，它为现代分子生物学的发展奠定了基础。

Each time it comes to a new chemical letter on the strand it is reading, it reconfigures itself to add a complementary letter to the RNA molecule it is creating.

每次接触到一个双链上的新化学字母，它会读出这个字母，并对自身重新调配，在它所创建的 RNA 分子中增加一个互补的字母。

The change of the molecular conformations of Langmuir films at air/water interface is also investigated.

在我们的这些双发色团分子中，常见的偶极—偶极激子相互作用发生的可能性不大。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。