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x射线衍射
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  x-ray diffraction
     An electrochchemical behavior of Zine in NH4Cl and ZnCl2 is studied by cyclic voltammetry and X-ray diffraction, and Zn (NH3 )2Cl2 is defined the main formation of negative reaction.
     用循环伏安法和X-射线衍射方法研究了锌在NH4Cl、ZnCl2溶液中的电化学行为,确定了锌电极的反应产物主要为Zn(NH3)2Cl2。
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     X-RAY DIFFRACTION ANALYSES OF PHASE RELATIONSHIPS IN A RAPIDLY SOLIDIFIED Ti_3Al-BASED ALLOY
     快速凝固Ti_3Al基合金相变的X-射线衍射分析
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     Study on Structure and Properties of Polymer Dispersed Cholesteric Liquid Crystals Ⅳ. The X-ray Diffraction of Poly(MMA-co-BMA)and Cholesteryl Nonanoate Mixtures
     胆甾液晶/聚合物多组分体系的结构与性质研究Ⅳ.ChN/Poly(MMA-co-BMA)混合体系的X-射线衍射研究
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     In the weight content range of RE 2. 91% ,Ba 3. 85%,Mg 9.70%,Ca 2.2%,Al 1.5% and Fe balance, phase composition and microstructure of REBaMgSiFe alloy have been analysed by X-ray diffraction and electron probe.
     在成分(wt%)为RE2.91、Ba3.85、Mg9.70:Ca2.2、Al1.5,余量为Fe的范围内,运用X-射线衍射分析及电子探针分析手段对REBaMgSiFe合金的物相和显微组织进行了分析。
短句来源
     This paper studies the composition and microstructure of SiC/Al 2O 3/Al-Si composite formed from the oxidized Al-Mg-Si alloy at a high temperature through X-ray diffraction (XRD), optical micrography and scanning electron microscope (SEM), and analyzes the effects of the technological process and the material microstructure on its mechanical properties.
     通过X-射线衍射、光学显微检验和扫描电子显微镜观察,研究了由Al-Mg-Si合金高温直接氧化形成的SiC/Al2O3/Al-Si复合材料的相组成和显微结构,分析了工艺参数和材料显微结构对其力学性能的影响。
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  x-ray diffractometry
     Oxide film was determinated with X-ray diffractometry and scanning electron microscopy exhibited amorphous and ceramic structure.
     用X- 射线衍射分析法和扫描电镜法检测,氧化膜为非晶态氧化铝陶瓷膜。
短句来源
  x  ray diffraction
     By means of infrared spectroscopy,nuclear magnetic resonance,differential scanning calorimetry, Xray diffraction and the degradation experiments in vitro and in vivo,the structure and properties of PGLA were studied and compared with those of PGA.
     应用红外光谱、核磁共振、差示扫描量热分析、X-射线衍射和生物体内外降解实验,分析了PGLA的结构与性能,并与均聚物聚乙交酯(PGA)作比较。
短句来源
     The structure of the directingagent by method of Xray diffraction was examined.
     用X-射线衍射法对用于NaA合成的导向剂结构进行了研究。
短句来源
     The structure of μoxygenbis (tribenzyltin) single crystal was determined by Xray diffraction method The crstal belongs to trigonal with space group R3 and cell parameters: a=b=c=09646 nm, α=β=γ=8399(1)°, V=08840 nm3, Z=1, Dx=1503 g·cm-3, μ=14473 cm-1, F(000)=402, final R=0028 for 2288 unique reflection [I≥3σ(I)] The bond lengths of SnO is 01916 nm, all SnC bonds are 02168 nm The bond angles of SnOSn is 18000(0)°, furthermore, all OSnC angles are between 10816 and 10825(9)°, and SnCH2Ph angles are 1108°, benzene ring plane atright angles The six PhCH2 groups are oriented in staggered conformation The structures of the title compound are symmetry on the oxygen atom The base peak is the benzyl ion, that was formed by breaking the SnC bond in the mass spectrum
     用X-射线衍射方法测定了μ-氧-双(三苄基锡)的晶体结构,该化合物晶体属三方晶系,空间群为R3,晶体学参数:a=b=c=0.9646nm,α=β=γ=83.99(1)°,V=0.8840nm3,Z=1,Dx=1.503g·cm-3,μ=14.473cm-1,F(000)=402,R=0.028。 Sn-O键长0.1916nm,Sn-C键长0.2168nm,Sn-O-Sn键角为180.00(0)°,三个O-Sn-C键角在108.16到108.25(9)°之间,Sn-CH2-Ph键角110.8°,三个苯环互相垂直,六个苄基以反交叉式构型,分子以氧原子为中心对称,在质谱中Sn-C键裂解形成苄基离子基峰。
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  “x-射线衍射”译为未确定词的双语例句
     The crystal structure, determined by X ray diffraction, belongs to the monoclinic system, space group P2 1. The unit cell parameters are: a=1.446 7(3) nm , b=0.949 7(2) nm , c=1.487 2(3) nm , β=112.75(3)°,Z=2, V=1.884 4(9)nm 3.
     X-射线衍射分析表明晶体属于单斜晶系,空间群P21,晶胞参数:a= 1.446 7(3) nm ,b= 0.949 7(2)nm ,c= 1.487 2(3) nm ,β= 112.75(3)°,Z= 2,V= 1.884 4(9) nm 3。
短句来源
     X-ray AND NMR STUDIES OF THE COORDINATION STRUCTURE OF [(CF_3CO_2)_2Ln9CF_3HCO_20Al9i-Bu0_2·2THF]_2 (Ln=Nd,Y)
     [(μ-CF_3CO_2)_2Ln(μ-CF_3HCO_2)Al(i-Bu)_2·2THFl_2(Ln=Nd,Y)配合物的NMR和X-射线衍射研究
短句来源
     The phase diagrams showed that for Triton X-1 00/C_(10)H_(21) OH/H_2O system thelamellar liquid crystals were formed more easily and were more stable than Triton X-100/C_6H_6/H_2O system lamellar liquid crystals.
     相行为研究表明,与TritonX-100/C_6H_6/H_2O体系相比,TritonX-100/C_(10)H_(21)OH/H_2O体系更易于生成层状液晶,并更为稳定,小角X-射线衍射表明;
短句来源
     Its period is 18.40 A (Ic=18.40 A ).
     由 X-射线衍射数据分析得出,新相 LiTiS2的重复周期 Ic=18.40A。
短句来源
     The title compound was synthesized by the reaction of TPA·3HClO 4 with FeCl 3·6H 2O in methanol.
     标题化合物是FeCl3·6H2O和TPA·3HClO4(TPA= (C6H6N)3N) 在甲醇溶液中反应得到的橙色晶体。 X-射线衍射测定了其单晶结构。
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  x-ray diffraction
X-ray diffraction and selected area electron diffraction analysis showed that Pt-Sn-B/CNTs had an amorphous alloy structure that can improve catalytic performance.
      
Chemical and physical reactions during the low temperature aqueous chemical synthesis of nanostructured Bi2Te3 powders were investigated in-situ by pH measurement, color observation of the solution and X-ray diffraction analysis of the powders.
      
The structures of the title compounds have been determined by elemental analysis, 1H-NMR and single crystal X-ray diffraction analysis.
      
The nanocrystalline ZnO was characterized using X-ray diffraction (XRD), TEM and Brunner-Emmett-Teller method (BET).
      
LiAlTiO4 was characterized by the X-ray diffraction method.
      
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  x-ray diffractometry
The structure and photoluminescence (PL) properties of the samples were measured using X-ray diffractometry (XRD), Fourier transform infrared (FTIR) spectroscopy and PL spectrophotometry.
      
Nano-HAP powder and modified PMMA were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR).
      
The products were characterized by X-ray diffractometry (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).
      
Optical microscopy (OM), X-ray diffractometry (XRD), and scanning electron microscopy (SEM) were used to analyze the microstructure of cold-pressed composites after sintering at 1,100°C.
      
The product powders were characterized by IR spectroscopy, X-ray diffractometry (XRD) and scanning electron microscopy (SEM).
      
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The decomposition of δ-ferrite at 750°,850° and 950℃ in quenched 18/8/3/1Cr-Ni-Mo-Ti stainless steel specimens has been studied microscopically,thetransformation products being electrolytically extracted and identified by X-raydiffraction method.At early stages of decomposition accicular austenite forms along certaincrystallographic planes of δ-ferrite.As a result,the remaining ferrite becomesenriched in Cr,Mo and impoverished in C,Ni,Mn,and was found to transformsubsequently to sigma which begins after heating...

The decomposition of δ-ferrite at 750°,850° and 950℃ in quenched 18/8/3/1Cr-Ni-Mo-Ti stainless steel specimens has been studied microscopically,thetransformation products being electrolytically extracted and identified by X-raydiffraction method.At early stages of decomposition accicular austenite forms along certaincrystallographic planes of δ-ferrite.As a result,the remaining ferrite becomesenriched in Cr,Mo and impoverished in C,Ni,Mn,and was found to transformsubsequently to sigma which begins after heating for 5-6 minutes at 850℃.Precipitation of titanium carbide first occurs in the ferrite grains,later itmakes appearance along the ferrite-austenite interphase boundaries and along thetwinning planes within the austenite grain.The precipitation of titanium carbideseems to have no appreciable effect on the sequence of decomposition of δ-ferrite.The impact value of the steel was found to decrease very markedly before thecommencement of the δ→σ transformation and it is considered that this mightbe associated with the titanium carbide precipitation.

应用金相法研究了18/8/3/1 Cr-Ni-Mo-Ti不锈钢经1300℃固溶处理后在950℃,850℃及750℃恒温分解初期金相组织的变化,并用电解分离及X射线衍射方法鉴定在不同恒温分解阶段δ-铁素体分解的产物。观察到由于提高了固溶处理温度,高温固定下来的铁素体极为不稳定,在分解为奥氏体的同时有TiC的沉淀出现。当δ→γ的转变,由于Cr,Mo等合金元素的偏聚不能继续进行时,才发现残留的δ-铁素体转变为σ-相。过去一般认为18/8型不锈钢在550—1000℃保温后,室温冲击靭性的降低是由于σ-相的沉淀所引起的,试验结果指出在σ-相出现之前,钢的冲击靭性已显著下降,这种现象可能与δ-铁素体分解初期TiC的沉淀有关。

Alkaline and acid hydrolyses of polyacrylamide have been studied.Hydrolyses caused by dilute alkali or dilute acid were found to beincomplete, while those by concentrated alkali and acid approaching completeness.In the range of 0.6--3.3 N sodium hydroxide and at 100℃, the limiting degreeof hydrolysis is around 65--70%. It was found that Van Slyke method couldbe applied to the quantitative determination of the amide group in the polymerswhile the nitrile groups causing no interference. The identity period ofpolyacrylamide...

Alkaline and acid hydrolyses of polyacrylamide have been studied.Hydrolyses caused by dilute alkali or dilute acid were found to beincomplete, while those by concentrated alkali and acid approaching completeness.In the range of 0.6--3.3 N sodium hydroxide and at 100℃, the limiting degreeof hydrolysis is around 65--70%. It was found that Van Slyke method couldbe applied to the quantitative determination of the amide group in the polymerswhile the nitrile groups causing no interference. The identity period ofpolyacrylamide was determined to be 5.2A through X-ray analysis. Copolymers of acrylamide with acrylic acid, allyl alcohol or vinyl acetatehave been synthesized and their behavior towards alkaline hydrolysis has beenstudied. The data for the completeness of the hydrolysis of the latter twocopolymers served to support the suggestion that the screening or repulsiveeffect of the neighboring negatively charged carboxylate groups played animportant role in hindering the hydrolysis of polyacrylamide from going tocompleteness. Several N-alkylsubstituted polyacrylamide and their copolymers have beensynthesized. Their degrees of hydrolysis were determined in the followingorder of completeness: polyacrylamide> poly N-methyl acrylamide> polyN, N-dimethylacrylamide> poly N, N-diethylacrylamide. It was pointed outthat besides the above stated screening effect of negatively charged groups, sterichindrance of N-alkyl- and N, N-dialkylamino groups in the polymer moleculesshould never be neglected.

本文报告聚丙烯酰胺的硷性水解及酸性水解。用浓酸或浓硷处理,都可接近完全水解,用稀酸或稀硷水解则不完全。在0.6~3.3N氢氧化钠及100°时,水解程度为65—70%,Van Slyke法可用以测定丙烯腈与丙烯酰胺共聚物中酰胺基量。用X-射线衍射法测定聚丙烯酰胺长链的等同周期为5.2A。硷性水解之不完全,主要是由于邻近羧基的负电场对羟基向酰胺基进攻时的屏蔽作用所致。合成丙烯酰胺分别与丙烯酸、丙烯醇、或乙酸乙烯酯的共聚物,从而研究其硷性水解,前者的水解限度为75%,后二者可以接近完全,直接证明邻近非负性基团不能产生负电场因而没有屏蔽作用,故水解接近完全。研究若干N取代聚丙烯酰胺及共聚物的水解,在一定条件下它们的水解程度按下列次序递减:聚丙烯酰胺>聚N-甲基丙烯酰胺>聚N,N-二甲基丙烯酰胺>聚N,N-二乙基丙烯酰胺。除了邻近负电场的屏蔽作用外,N及N,N-取代基在长链中有不容忽视的空间阻碍。

In this article general formulas are derived which account for the influence of X-ray geometry, the nonideal adjustment of goniometer and the parameters of recording system on the centre of gravity, on the mean-square width and on the Fourier coefficients of the line profile. Several related problems are briefly discussed.

本文研究X射线衍射仪的各种工作条件对干涉线纹的重心位置、均方宽度和傅里叶系数的影响,得出了普遍的公式。对若干有关问题也进行了讨论。

 
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