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     A reaction system containing C6H11Na, Et4NBF4, FeCl2 and (NH4)2WS4 in 20mL CH3OH solvent affords the title cluster, (Et4N)3[W2Fe6S8(SC6H11)6(OCH3)3].
     C6H11Na, Et4NBF4, FeCl2, (NH4)2WS4在20mL CH3OH溶剂的反应中, 标题簇合物(Et4N)3[W2Fe6S8(SC6H11)6(OCH3)3]被分离得到, 对其进行X-ray 单晶衍射和结构解析。
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     The title compound was synthesized from the hydrothermal reaction of V2O5, H3PO4, H2NCH2CH2NH2 and H2O in the molar ratio of 0.55∶4∶3.6∶265 at 175 ℃ for 5 d.
     标题化合物是在反应物摩尔比为 V2O5∶H3PO4∶H2NCH2CH2NH2∶H2O=0.55∶4∶3.6∶265 时, 175 ℃水热反应 5 d 合成的.
短句来源
     Using K3Fe(CN)6, N, N - dimethylacetamide (DMA) and Sm(NO3)3·6H2O, the title complex [Sm(DMA)2(H2O)4Fe(CN)6·5H2O]n has been synthesized and characterized with elemental analysis, IR spectra and X - ray crystal structure.
     以K_3Fe(CN)_6,N,N-二甲基乙酞胺和Sm(NO_3)_3·6H_2O合成了标题配合物[Sm(DMA)_2(H_2O)_4Fe(CN)_6·5H_2O]_n,并通过元素分析,红外光谱进行了表征.
短句来源
     The title nickel complex with 1,2-disalicyloylhydrazine, [Ni(en)3]2+H2dsh2-, has been synthesized.
     合成了标题配合物[Ni(en)3]2+H2dsh2- (H4dsh = 1,2-二水杨酰基肼)。
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     The title compound([Mn( Ⅲ )OH·H2O-TMAP]·I3·Cl·9H2O) was synthesized and characterized by X-ray diffraction method.
     报道了标题化合物([Mn(Ⅲ)OH·H_2O·TMAP]·I_3·Cl·9H_2O)的合成和晶体结构。
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  “the title”译为未确定词的双语例句
     Note to the Title GUIHAIA
     “GUIHAIA”刊名注释
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     Condensation of benzyloxybenzoyl hydrazine with aromatic aldehydes yielded the corresponding hydrazones. Cyclization of 2a~2k with propanoic anhydride gave the title compounds(3a~)3k in good yield equating to 70%~89%.
     苄氧苯甲酰肼与芳香醛缩合得到酰腙,再与丙酸酐环合,成了2-芳基-3-N-丙酰基-5-苄氧苯基-1,3,4-唑啉类衍生物,收率70%~89%。
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     Using α-D-glucose as the starting material,the title compound,2,3,4,6-tetra-O-acetyl-(β-D-glycosyl)-isothiocyanate(GITC),was synthesized and characterized by NMR,with the possible reaction mechanism discussed.
     以葡萄糖为原料经过乙酰化、溴化、叠氮化、硫氰酸化4步反应合成了2,3,4,6-四乙酰基--βD-吡喃葡萄糖基异硫氰酸酯(GITC),用NMR对其进行了表征,初步探讨了其反应机理。
短句来源
     Crystal data for the title compound are:monoclinic,space group P2(1)/n;
     该化合物属单斜晶系,P2(1)/n空间群,其化学式为:C12H16CoN6O10,Mr=463.24;
短句来源
     The rate constants of the title reaction were calculated by the conventional transition state theory with wigner correction in a wide temperature range 200~2000K. At 298K,the total rate constants of the two reactions were 2.09×10-15 and 1.75×10-14 cm3·molecule-1·s-1.The branching ratios of the both oxygen-atom transfer reactions were 100%.
     低温时氧转移反应占绝对优势,298 K时DMSO与XO(X=Cl,Br)两个反应体系的总速率常数分别为2.09×10-15和1.75×10-14cm3.molecu le-1.s-1,氧转移反应分支比均为100%。
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     title;
     语言精炼,标题简洁;
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     The Retention of Title
     论所有权保留
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     <title>On Symbolism
     谈象征手法
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     On the Title of Shishuoxinyu
     《世说新语》题名浅议
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  the title
The title compounds represent a novel class of potent antimicrobial agents.
      
The title compounds were evaluated for their efficacy in inhibiting MDA-MB-231 breast cancer cell proliferation.
      
The structures of the title compounds have been determined by elemental analysis, 1H-NMR and single crystal X-ray diffraction analysis.
      
Bioassay showed that some of the title compounds had high plant-growth regulatory activity.
      
The title compounds were synthesized via N-benzylmalonamic acid methyl ester (3).
      
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This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier...

This article, a result of research work caried On in connection with Teaching, aims at presenting an analysis of the basic circuit of the resistance strain gage withaut amplifier, including therin (1) a computation of the relation between the resistance of each branch of the bridge and the sensitivity of galvanometer on the one hand and the sensitivity of the gage on the other and (2) a brief discussion of the limitations in regard to both the construction and the utilization of the strain gage without amplifier Itconcludes with a constructive critieism of Comrade Yu-chuan Chia's article appeared in the second issue of the periodical with the title "The Resistance Strain Gage for Static Deformation—Its Design and Its Construction."

本文是結合敎學工作進行研究的一個結果,提供了對不帶放大器的電阻應變儀基本電路的分析,包括(1)電橋各臂的電阻和檢流計的靈敏度與應變儀靈敏度的關係的計算;和(2)對不帶放大器的應變儀在製造和使用方面的限制的簡短討論。並提出對本刊第二期贾有權同志:“测靜荷的電阻式應變儀的設計和製造”一文的一些改進意見。

The title compounds were synthesized respectively from methyl 2,3-anhydro-α-and β-D-lyxofuranoside (Ⅳ, α and β), This consists of: Methyl 2,3-anhydro-α- and β-D-lyxofuranoside (Ⅳ, α and β)→ methyl 2,3-anhydro-5-O-toluene-p-sulphonyl-α-and β-D-lyxofuranoside(Ⅴ,α and β)→methyl 2,3-anhydro-5-iodo-5-deoxy-α- and β-D-lyxofuranoside (Ⅵ, α and β)→methyl 2,3-anhydro-α- and β-D-lyxomethyloside (Ⅶ, α and β). All the intermediates are crystalline except the last ones. During the course of the investigation, methyl...

The title compounds were synthesized respectively from methyl 2,3-anhydro-α-and β-D-lyxofuranoside (Ⅳ, α and β), This consists of: Methyl 2,3-anhydro-α- and β-D-lyxofuranoside (Ⅳ, α and β)→ methyl 2,3-anhydro-5-O-toluene-p-sulphonyl-α-and β-D-lyxofuranoside(Ⅴ,α and β)→methyl 2,3-anhydro-5-iodo-5-deoxy-α- and β-D-lyxofuranoside (Ⅵ, α and β)→methyl 2,3-anhydro-α- and β-D-lyxomethyloside (Ⅶ, α and β). All the intermediates are crystalline except the last ones. During the course of the investigation, methyl 2-O-toluene-p-sulphonyl-3-5-O-isopropylidene-α-and β-D-xylofuranoside (Ⅱ, α and β, R=Ts) were obtained crystalline. On hydrolysis, the α-anomer gave the beautifully crystalline methyl 2-O-toluene-p-sulphonyl-β-D-xylofuranoside while the β-anomer on similar treatment yielded the syrupy deacetonated product.

自2,3-内醚-α-和β-D-来苏糖甲基呋喃甙(Ⅳ,α和β)合成了2,3-内醚5-去羟-α-和β-D-来苏糖甲基甙(Ⅶ,α和β).合成的步骤为:2,3-内醚-α-和β-D-来苏糖甲基呋喃甙(Ⅳ,α和β)→2,3-内醚-5-O-对甲苯矿酰基-α-和β-D-来苏糖甲基呋喃甙(V,α和β)→2,3-内醚-5-碘代-5-去羟-α-和β-D-来苏糖甲基甙(Ⅵ,α和β)→2,3-内醚-5-去羟-α-和β-D-来苏糖甲基甙(Ⅶ,α和β).除了最后一对外,其余的中间物都是结晶的. 本工作得到了结晶的2-O-对甲苯矿酰基-3,5-异丙亚基-α-和β-D-木糖甲基呋喃甙(Ⅱ,α和β).水解后,α-端基差向异构体生成美丽的2-O-对甲苯矿酰基-α-D-木糖甲基呋喃甙(Ⅲα,R=Ts)晶体,可是在同样的处理下,β-端基差向异构体却只是糖浆状产物(Ⅲβ,R=Ts).

The title compound was synthesized from D-xylose.Methyl α-and β-D-xylofuranoside mixture(Ⅱ),prepared according to Levene et al.was treated with toluene-p-sulphonyl chloride inpyridine first at 0℃ and then at room temperature for four days,followed by usual procedureof isolation and fractional crystallization from alcohol to give 45.1% yield of crystalline methyl2,3,5-tri-O-toluene-p-sulphonyl-β-D-xylofuranoside(Ⅲ),m.p.131—132℃,[α]_D~(24.5)=-31.5°(chloroform,c=1.00,l=2 dm.).In order to obtain(Ⅲ)in crystalline...

The title compound was synthesized from D-xylose.Methyl α-and β-D-xylofuranoside mixture(Ⅱ),prepared according to Levene et al.was treated with toluene-p-sulphonyl chloride inpyridine first at 0℃ and then at room temperature for four days,followed by usual procedureof isolation and fractional crystallization from alcohol to give 45.1% yield of crystalline methyl2,3,5-tri-O-toluene-p-sulphonyl-β-D-xylofuranoside(Ⅲ),m.p.131—132℃,[α]_D~(24.5)=-31.5°(chloroform,c=1.00,l=2 dm.).In order to obtain(Ⅲ)in crystalline state,the methyl D-xylofuranoside mixture should be distilled under a vacuum not below 0.05 mm.Methyl β-D-xylopyranoside(Ⅷ)was similarly converted into methyl 2,3,4-tri-O-toluene-p-sulphonyl-β-D-xylopyranoside(Ⅸ),m.p.138—139℃,[α]_D~24=-37°(chloroform,c=0.50,l=2 dm.)with a yield of 81%.These two tritoluene-p-sulphonyl esters showed a mixed melting pointof 120—123℃.On the other hand,the authentic methyl 2-O-toluene-p-sulphonyl-β-D-xylofura-noside obtained by hydrolysis of the crystalline methyl 2-O-toluene-p-sulphonyl-3,5-O-isopropyli-dene-β-D-xylofuranoside as reported in Part Ⅳ on similar treatment gave rise to a tritoluene-p-sulphonyl ester identical in every respect with(Ⅲ),and so established the anomeric configu-ration of the latter.(Ⅲ)was caused to react with sodium iodide in acetone at 100℃(Oldham-Rutherfordreaction)for eight hours to give 97% yield of methyl 2,3-di-O-toluene-p-sulphonyl-5-deoxy-5-iodo-β-D-xylofuranoside(Ⅳ),m.p.105—106℃,[α]_D~(23.5)=-55°(chloroform,c=1.00,l=2dm.),which was in turn hydrogenated in the presence of Raney nickel to yield the syrupy methyl2,3-di-O-toluene-p-sulphonyl-β-D-xylomethyloside(Ⅴ).Finally,(Ⅴ)was treated with sodiummethoxide in chloroform at 0℃ and methyl 2,3-anhydro-β-D-ribomethyloside was obtained as acolorless,mobile liquid,b.p.46—48℃/1—2 mm,[α]_D~24=-113.5°(chloroform,c=0.52,l=2 dm.).The overall yield from D-xylose was 18%.The structure of the anhydro sugar wasdeduced from existing evidence.

自木糖经过五步反应合成了2,3-内醚-5-去羟-β-D-核糖甲基甙(Ⅵ)。这五步反应是:D-木糖(Ⅰ)→D-木糖甲基呋喃甙(Ⅱ,α-和β-端基差向异构体混合物)→2,3,5-三-O-对甲苯磺酰基-β-D-木糖甲基呋喃甙(Ⅲ)→2,3-二-O-对甲苯磺酰基-5-去羟-5-碘代-β-D-木糖甲基呋喃甙(Ⅳ)→2,3-二-O-对甲苯磺酰基-5-去羟-β-D-木糖甲基甙(Ⅴ)→2,3-内醚-5-去羟-β-D-核糖甲基甙(Ⅵ)。总产率是18%。将已知的结晶的2-O-对甲苯磺酰基-β-D-木糖甲基呋喃甙(Ⅶ)进行对甲苯磺酰化,得到与上述完全相同的Ⅲ,这样就证明了Ⅲ的端基的构型。同时,也从β-D-木糖甲基吡喃甙(Ⅷ)制备了2,3,4-三-O-对甲苯磺酰基-β-D-木糖甲基吡喃甙(Ⅸ)。根据现有的知识肯定了合成的内醚糖的结构。

 
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