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红外
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  ir
    IR STUDIES OF THE SURFACE OH GROUPS AND ACIDITY OF HZSM-5 ZEOLITE
    HZSM-5型沸石表面结构OH基及其酸性的红外研究
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    IR SPECTRA OF CO ADSORBED ON Ru/Al_2O_3 AND Pt/Al2O3 AND THE INTERACTION BETWEEN METAL AND CARRIER
    CO在Pt/Al_2O_3和Ru/Al_2O_3上的红外光谱及金属和载体的相互作用
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    THE INVESTIGATION OF MOLECULAR SIEVE-ZEOLITE SELECTIVE IR RADIATIVE MATERIAL(Ⅳ)——THE PREPARATION AND THE IR RADIATIVE PROPERTY OF 4~# MATERIAL
    分子筛型选择性红外辐射材料的研究(Ⅳ)——4~#分子筛的研制及其红外性能
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    The Role of Hydrogen in IR Multiphoton Dissociation of SF_6
    氢在SF_6红外多光子解离中的作用
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    IR Stuby on the Surface and its Adsorption Properties of the Ir/Al_2O_3 Catalyst
    Ir/Al_2O_3催化剂的表面及其吸附性质的红外研究
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    Application of Artificial Neural Network in NIR Analysis and Dark-colored Oil Analysis
    人工神经网络在近红外分析方法中的应用及深色油品的分析
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    ON THE 1157 AND 973 CM~(-1) ABSORPTION BANDS OF POLYPROPYLENE
    关于聚丙烯红外光谱中的1157及973厘米~(-1)吸收带
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    Study of Reaction Mechanism for Dehydrogenation of Ethylbenzene Over Iron-Oxide Catalysts(Ⅰ)——In-situ FT-IR spectra of Ethylbenzene Adspecies and Kinetic isotope Effects of the Dehydrogenation Reaction
    氧化铁系催化剂上乙苯脱氢反应机理研究(Ⅰ)——乙苯吸附态的“原位”红外光谱及脱氢反应的动力学同位素效应
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    The Application of FT-IR-EMS Method in the Study of the Dynamics of PEP/PU IPN Formation
    利用付氏红外发射光谱研究EPO/PU IPN体系的反应动力学
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    Preparation for and I.R. Spectra and Raman Spectra of [LM(Cl)_2M'Cl_2] and [LM(Cl)_2M'L']~(2+) Type Bi-heteronuclear Complexes (L=dpe, bipy; M=Ni, Co, Zn, Cd, Hg)
    [LM(Cl)_2MCl_2]和[LM(Cl)_2ML']~(2+)型异核配合物合成及其红外,远红外光谱的研究(L=dpe、bipy;M=Ni、Co、Cu、Zn、Cd、Hg)
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  ir
The synthesized compounds have been characterized on the basis of elemental analyses, infrared spectroscopy (IR), and nuclear magnetic resonance (NMR).
      
Their structures were determined by IR spectra, 1H nuclear magnetic resonance (NMR), 13C NMR, and elemental analysis.
      
The polymers were characterized by IR spectra, thermal-weight analysis, scanning electron microscope and laser particle size analysis.
      
The structure of the B3 monomer was confirmed by MS, 1H NMR/IR.
      
The structure of the titled compound is determined by infrared spectrum(IR), proton nuclear magnetic resonance (HNMR), and mass spectrum (MS) and elemental analysis (EA).
      
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With a view to locating the lowast state of trebly ionized cerium, the absorption spectra of CeCl3, and Ce2(SO4)3 solutions are examined between 2,000 A and 10,000 A. While no absorption was found in the long wave length side up to 9500 A, a new broad absorption region was observed, with center at about 2105 A. It is suggested that this and the four other similar absorptions observed by Freed are not related with the transitions which probably lie in a region not yet covered in this study.

本文从理论及实验方面讨论Ce~(+++)之最低能位问题。从CeCl_3及Ce_2(SO_4)_3溶液,除Freed氏已得之四吸收带外,在2105A处更薄现一阔而漫之吸收带。在红外方面,则直至9500A尚无吸收光线。因各种理由,似可证明Ce~(+++)之4f~2F—5d~2D线,与各紫外吸收无关而应在1至10μ间。

It was found that methyl chloride hydrate has absorption maxima at 1.493,1.990, 3.032, 4.521, and 6.072μ. and each of these absorption maxima lies bet-ween that of ice and of water as shown in the following table: Modes of Water at Methyl chloride Ice at Vibration 0.5℃ hydrate at 1℃ -3℃ v_1 3389 cm~(-1). 3302 cm~(-1). 3283 cm~(-1). (2.949μ) (3.032μ) (3.046μ) v_3 1654 cm~(-1). 1647 cm~(-1). 1646 cm~(-1). (6.045μ) (6.072μ) (6.076μ) v_3+v_R 2148 cm~(-1). 2212 cm~(-1). 2227 cm~(-1). (4.655μ) (4.521μ) (4.500μ) v_1+v_3...

It was found that methyl chloride hydrate has absorption maxima at 1.493,1.990, 3.032, 4.521, and 6.072μ. and each of these absorption maxima lies bet-ween that of ice and of water as shown in the following table: Modes of Water at Methyl chloride Ice at Vibration 0.5℃ hydrate at 1℃ -3℃ v_1 3389 cm~(-1). 3302 cm~(-1). 3283 cm~(-1). (2.949μ) (3.032μ) (3.046μ) v_3 1654 cm~(-1). 1647 cm~(-1). 1646 cm~(-1). (6.045μ) (6.072μ) (6.076μ) v_3+v_R 2148 cm~(-1). 2212 cm~(-1). 2227 cm~(-1). (4.655μ) (4.521μ) (4.500μ) v_1+v_3 5144 cm~(-1). 5025 cm~(-1). 4983 cm~(-1). ( 1.944μ) (1.990μ) (2.007μ) v_1+v_2 6878 cm~(-1). 6698 cm~(-1). 6689 cm~(-1). (1.454μ) (1.493μ) ( 1.495μ) It appeared that during the formation of methyl chloride hydrate, reorien-ration of the water molecules around the methyl chloride molecule takes place,resulting in an ice-like structure.

一氯甲烷水合物在1.45,1.94,2.95,4.66和6.05μ五个区域的红外吸收光谱经用红外光栅分光计分别测定;为便于比较,水和冰相应的红外吸收光谱,亦同时找出。一氯甲烷水合物的红外吸收光谱,与冰的吸收光谱相差甚微,与水的吸收光谱相差很大,可见一氯甲烷水合物形成时,水分子发生了重排作用,氢原子都形成氢键,构成类似冰的结构的结晶体。

Streptose(Ⅰ)or dihydrostreptose(Ⅱ)is the only component of the strepto-mycin or dihydrostreptmycin molecule which has neither been isolated nor syn-thesized yet.Now,we have succeeded in a partial synthesis of Ⅱ,isolated as itsL tosylhydrazone(Ⅵ).Dihydrostreptonic acid lactone(Ⅲ),a known degradationproduct of dihydrostreptomycin,was reduced by means of sodium amalgam,sodiumborohydride or lithium aluminum hydride(in tetrahydrofuran-ether,first at-10°and then at zoom temperature).All three methods resulted in a...

Streptose(Ⅰ)or dihydrostreptose(Ⅱ)is the only component of the strepto-mycin or dihydrostreptmycin molecule which has neither been isolated nor syn-thesized yet.Now,we have succeeded in a partial synthesis of Ⅱ,isolated as itsL tosylhydrazone(Ⅵ).Dihydrostreptonic acid lactone(Ⅲ),a known degradationproduct of dihydrostreptomycin,was reduced by means of sodium amalgam,sodiumborohydride or lithium aluminum hydride(in tetrahydrofuran-ether,first at-10°and then at zoom temperature).All three methods resulted in a mixture ofproducts containing a reducing sugar(B)and a non-reducing by-product(C).Lithium aluminum hydride gave the best yield(47%)of B.For isolation,thereaction product obtained from lithium aluminum hydride reduction was firstfreed from metallic ions by means of Amberlite IR-120 and from unreacted Ⅲby paper chromatography(Whatman № 1,ascending,solvent:BuOH·EtOH·H_2O(4:1:5)at 20°,B:R_f 0.32 or R_G2.46 (referring to R_f of glucose as 1);Ⅲ:R_f 0.45 ot R_G3.46;C:R_f 0.32).The isolated substance containing B was separatedfrom C by conversion into a tosylhydrazone(Ⅵ).Ⅵ was recrystallized first fromaqueous methanol and then from tetrahydrofuran-ether in needles of m.p.137.5-138°(decomp.),[α]_D~(30)-38.7°(initial)→26.5°(18 hours;c,3.8,pyridine).Itgives a very weak formazan reaction(Analyses,Caled.for C_(13)H_(20)O_6N_2S.C 46.97,H6.07;N8.43;S9.65.Found:C46.81;H6.04;N8.63;S9.57).In addition,Bgives positive reactions to common reducing sugar tests and forms a phenylosa-zone(Ⅷ)with phenylhydrazine in acetic acid(yellow needles of m.p.160—162°(decomp.)).The UV and IR absorption spectra of both Ⅵ and Ⅷ havebeen studied,It is concluded that B is dihydrostreptose(Ⅱ or Ⅷ),and Ⅵ(aor b)and Ⅷ are its tosylhydrazone and phenylosazone respectively.

双氢链糖酸内酯可以用钠汞齐、硼氢化钠、或铝氢化锂还原,均产生一种还原性糖和一种过度还原的物质的混合物。以铝氢化锂法产生还原性糖最高(47%)。还原产物经阳离子交换树脂除去金属离子,纸上层离法除去未反应的原料后,能与醋酸苯肼生成一种结晶苯脎,又与对-甲苯磺酰肼反应产生一种晶状对-甲苯磺酰腙,元素分析得 C_1(?)H_(20)O_6N_2S,有变旋性。对-甲苯磺酰腙经苯甲醛分解可以再生原来的还原性糖。还原性糖经硼氢化钠还原可以变为过度还原的物质。腙和脎的紫外及红外吸收光谱皆经研究。实验结果均证明还原性糖为双氢链糖,自还原产物所获得的结晶衍生物是双氢链糖的对-甲苯磺酰腙和苯脎。

 
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