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dimer of
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  二聚体
     Methods The ⅧR∶Ag, Ⅷ∶C, AT Ⅲ∶Ag, AT Ⅲ∶A, Fbg and D Dimer of plasma in 40 patients with cor pulmonale during acute attack were detected before and after treatment.
     方法 测定 40例慢性肺心病患者急性加重期治疗前、后血浆凝血因子Ⅷ相关抗原 (ⅧR∶Ag)、因子Ⅷ凝血活性 (Ⅷ∶C)、抗凝血Ⅲ酶抗原 (AT Ⅲ∶Ag)、抗凝血酶Ⅲ活性 (AT Ⅲ∶A)、纤维蛋白原含量 (Fbg)及D 二聚体 (D D)的变化。
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     Synthesis of a Cyclic Dimer of Dibenzo-18-crown-6 Containing Rigid 4,4′-Bis(aminomethyl)biphenyl Spacer
     4,4′-二胺甲基联苯搭桥的二苯并-18-冠-6环状二聚体的合成
短句来源
     The dimer of extracellular domain of CTLA-4 bounding specificity to B7 molecule is 150 folds higher than CD28. CTLA-4 is one of the most important costimulation signal with CD28 in the activation costimulate signal model of T cell and is regarded as the down-regulation factor for the CD28/B7 pathway.
     CTLA-4二聚体与B7具有高亲和力的受体—配基结合活性,结合力较CD28大150倍,是T细胞激活双信号模型中与CD28/B7共同发挥作用的重要的共刺激信号之一,目前被认为是一种天然免疫下调物质。
短句来源
     The composition of extracted species was deduced by means of double-logarithmic coordinates. Molecule ratio of PAP:TOA , as well as PAP:TBP, is 1:1. Molecule ratio of PAP:(HP)2 is 2:1, where (HP)2 is the dimer of P204;
     采用双对数坐标法确定萃合物组成,PAP与TOA、TBP分别以1:1的形式进行缔合,PAP与P2O4二聚体(HP)_2以2:1的形式进行缔合;
短句来源
     Monomer and dimer of CYANEX 272 in n-heptane was identified bymeasuring its molecular weight.
     本文通过测试CYANEX272在正庚烷中分子量,得到CYANEX272在正庚烷溶液中存在着CYANEX272单体和二聚体的结果。
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  “dimer of”译为未确定词的双语例句
     Complex cation [K 2(DB24C8) 2(H 2O) 2] 2+ is a dimer of two [K 2(DB24C8) 2(H 2O) 2] + groups bridged by two oxygen atoms of two H 2O molecules and K(1)-O(1)-O(2)-K(2) is coplanar.
     [K2 (DB2 4 C8) 2(H2 O) 2 ]2 +配阳离子是由两个 [K(DB2 4 C8) (H2 O) ]+基团通过两个水分子的氧原子桥联而 ,且 K(1 ) - O(1 ) - O(2 ) - K(2 )四个原子共平面 .
短句来源
     Researco of the Laser oscillation of the dimer of O_2(~1Δ_g)
     O_2(1~△_g)二聚物激光振荡研究
短句来源
     The equilibrium geometry of cyclic dimer of zinc porphyrin containing C 60 has been studied by semi empirical AM1 and PM3 methods.
     用半经验AM1和PM3方法研究了内含C60 的环状卟啉锌双体的稳定几何构型 .
短句来源
     When the pressure of oxygen was 0. 3 torr and the power of microwave was 300W, the met gain as high as 1. 83 % cm-1 was obtained,so the dimer of [O2 (1△g)]2 is expected to be a new excimer laser medium.
     当气压力0.3torr,微波功率为300W时,净增益为1.83%cm-1。 可见[O2(△g)]2二聚物可望成为一种新型准分子激光介质。
短句来源
     Gain characteristics study of a new excimer——dimer of O_2(~1Δg)
     新型准分子——O_2(~1△g)二聚物增益特性的研究
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  相似匹配句对
     Complications of Lumber Myelography with Dimer-X
     碘剂Dimer-X脊髓造影的并发症
短句来源
     Synthesis of alkyl ketene dimer
     AKD的化学合成
短句来源
     D-dimer was measured by immunoturbidimetric method.
     结果 :对照组D 二聚体为 0 .2 3 μg/ml± 0 .0 8μg/ml;
短句来源
     The results indicate that the complexes are dimer.
     结果表明:配合物为双核结构;
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  dimer of
Geometry of a Strong Hydrogen Bond As Determined by Gas-Phase Electron Diffraction: The Cyclic Dimer of Dimethylphosphinic Acid
      
An Alu element is a dimer of similar, but not identical, fragments of total size about 300 bp, and originates from the 7SL RNA gene.
      
AglA is a dimer of two identical 54-kDa subunits, and it hydrolyses the α-glycoside bonds of disaccharides and short maltooligosaccharides, acting on the substrate from the non-reducing end of the chain.
      
Electronic absorption and luminescence spectra of cyclic dimer of α-methylstyrene, 1,1,3-trimethyl-3-phenylindan, were described.
      
The [Sb2Cl8]2- anion is a dimer of the SbCl5E distorted octahedra sharing common Cl?Cl edge (E is the lone electron pair).
      
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Miracil D is effective against Schistomia Mansoni,but is ineffective against SchistosomaJaponica.The present communication deals with the preparation of seventeen new compoundsof the hydrochlorides of 3-dialkylaminomethyl-thiochromanones including its 7-chloro-and 7-methoxy-derivatives,which are related to Miracil D in structure.Those compounds were prepared by means of the Mannich reaction from the correspondingthiochromanone,amine and paraformaldehyde.Besides the hydrochloride of the Mannich base,tar-like...

Miracil D is effective against Schistomia Mansoni,but is ineffective against SchistosomaJaponica.The present communication deals with the preparation of seventeen new compoundsof the hydrochlorides of 3-dialkylaminomethyl-thiochromanones including its 7-chloro-and 7-methoxy-derivatives,which are related to Miracil D in structure.Those compounds were prepared by means of the Mannich reaction from the correspondingthiochromanone,amine and paraformaldehyde.Besides the hydrochloride of the Mannich base,tar-like substance was also obtained as the by-product of the reaction.It was found that theaddition of few drops of alcoholic hydrochloride solution could prevent the formation of the tar-like substance and thus increase the yield of the hydrochloride of the Mannich base.All the products,especially the 7-chloro-derivatives,were unstable in aqueous solution onstanding for several hours; but they were stable even on boiling if a few drops of dilute hydro-chloric acid solution were added.The physical and chemical properties of the decompositionproduct in aqueous solution and those of the above mentioned tar-like substance were identicalfor the same thiochromanone.It was probably a dimer of the corresponding 3-methylene-thio-chromanone.

本文制备了十七种3-二烃氨基甲基-苯并硫六圜-4-酮盐酸盐的衍生物。这些化合物是用相当的酮、胺类盐酸盐与聚甲醛进行 Mannich 反应制得。在反应中,氢离子可以抑制 Mannich 碱的分解。

Bis[1,3-dipheny1-2-imidazolidinylidend](1), dimer of Wanzlick's "nucleophilic carbene

在促进自由基型反应的条件(紫外光照射、无溶剂、室温振荡48小时)下,双[1,3-二苯基-2-咪唑烷叉](Ⅰ)与过量四氯化碳反应后生成较复杂产物(转化率约24%),自其中可分离检定二氯化物Ⅲe(约39%),一氯化物Ⅳ(约15%)及少量六氯乙烷。双体Ⅰ与1-氯丁烷反应(转化率约11%),亦可得二氯化物Ⅲe(约52%)。同样,自过量1-溴丙烷可得二溴化物Ⅲd(产率约59%,反应转化率约29%),自过量碘乙烷可得二碘化物Ⅲb(产率约70%,反应转化率约41%)。在离子型或异裂性的反应条件(室温、乙腈溶液、无引发自由基因素)下,各卤素与双体Ⅰ迅速反应,并以100%转化率及高产率形成其相应二卤化物Ⅲ。计:二氯化物Ⅲe,产率98%;二溴化物Ⅲd,产率90%;二碘化物Ⅲb,产率90%。新化合物Ⅲe及Ⅲd的结构通过几近定量的化学转化、紫外吸收光谱的对比、不同方法合成同一产物的熔点及混合烷点的对比以及元素分析得到证明。本工作说明,双体Ⅰ的反应方式不仅限于作为亲核卡宾Ⅱ的来源。双体Ⅰ本身是活泼分子,既能参与离子型反应,也能参与自由基型反应。

The first three members of polytetramethylcyclo-p-silylphenylene siloxane series i. e. the cyclic dimer, trimer and tetramer, have been obtained in 30~70% yields, from p-bis (dimethylethoxysilyl) benzene or p-bis (dimethylchlorosilyl) benzene by means of hydrolysis in the presence of hydrochloric acid and ethyl ether. From m-bis (dimethylchlorosilyl) benzene only one cyclic dimer has been obtained indicating the great reluctance of m-silylphenylene-siloxane to form larger cyclic structuresUnder the catalysis...

The first three members of polytetramethylcyclo-p-silylphenylene siloxane series i. e. the cyclic dimer, trimer and tetramer, have been obtained in 30~70% yields, from p-bis (dimethylethoxysilyl) benzene or p-bis (dimethylchlorosilyl) benzene by means of hydrolysis in the presence of hydrochloric acid and ethyl ether. From m-bis (dimethylchlorosilyl) benzene only one cyclic dimer has been obtained indicating the great reluctance of m-silylphenylene-siloxane to form larger cyclic structuresUnder the catalysis of potassium silanolate, the cyclic trimer of tetramethyl-p-silylphenylene siloxane readily polymerizes at 150℃, it can also be copolymerized with octamethylcyclotetrasiloxane. On the contrary, the cyclic dimer of tetramethyl-m-silyephenylene siloxane can not be polymerized at all under the same condition.

利用在盐酸乙醚溶液中的水解缩聚反应,从对-双(二甲基乙氧基硅)苯或对-双(二甲基氯硅)苯合成了聚四甲基环对硅苯撑硅氧烷系列的前三个成员:环状二聚体、环状三聚体和环状四聚体。但从间-双(二甲基氯硅)苯只能得到其相应的环状二聚体。由于间硅苯撑硅氧烷的空间结构原因而难以形成大环状化合物。在150℃及硅醇钾的催化下,四甲基对硅苯撑硅氧烷的环状三聚体既可以开环聚合,也可以和八甲基环四硅氧烷进行开环共聚合;而在相同的条件下,四甲基间硅苯撑硅氧烷的环状二聚体却完全不聚合。

 
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