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ray powder
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  线粉
    A Niobate Ba6FeNb9O30 was newly found in the ternay system BaO-Fe2O3-Nb2O5,and the unit cell parameters of Ba6FeNb9O30 were determined by X _ ray four _ circle single crystal diffraction. Further, the X _ ray powder diffraction data were made indexation with F30=32(0.016,58).
    在BaO -Fe2O3-Nb2O5 三元系统中 ,新发现存在铌酸盐Ba6FeNb9O30,利用四圆单晶衍射仪进行了晶胞参数测定 ,然后采用X射线粉晶衍射法获得该化合物的粉晶衍射数据 ,并进行了指标化 ,F30 =32(0.016,58)。
短句来源
    The unit cell parameters of Ba3Ni0.33Nb4.67O15 were determined by X _ ray four _ circle single crystal diffraction, and its X _ ray powder diffraction data were indexed and reported in this paper.
    以BaCl2 和B2O3为主要助熔剂制备了Ba3Ni0.33Nb4.67O15 的单晶体。 利用四圆单晶衍射仪测定晶胞参数 ,然后采用X射线粉晶衍射法进行了物相分析,对该化合物的粉晶衍射数据进行了指标化 ,并报道了其X射线衍射数据。
短句来源
    X_ray powder diffraction shows that the intensity of diffraction peaks decreases after grinding. There is no damage to the tourmaline crystal lattice in the process of direct heating, azeotropic distillation, or ultrafine grinding.
    X射线粉晶衍射结果表明 ,研磨过程降低了粉末衍射峰的强度 ,但直接加热干燥和共沸蒸馏干燥均未破坏电气石的晶格结构。
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  “ray powder”译为未确定词的双语例句
    DETERMINATION OF X--RAY POWDER DIFFRACTION DATA FOR SODIUM LEAD NIOBATE
    铌酸铅钠X射线衍射数据的测定
短句来源
    Study on Co 2+ L Lysine Complex by X ray Powder Diffraction Spectra
    Co~(2+)-L-赖氨酸的合成及其X射线光谱研究
短句来源
    Heteropoly compounds α K 6[GeW 11 Co(H 2O)O 39 ]12H 2O α K 5H[GeW 11 Ni(H 2O)O39]·15H 2O are prepared and characterized by means of elemental analysis,IR and UV spectra,X ray powder diffraction and so on.
    合成了钴、镍单取代钨锗杂多酸盐α-K6[GeW11Co(H2O)O39]·12H2O和α-K5H[GeW11Ni(H2O)O39]·15H2O.通过元素分析、紫外和红外光谱、X-射线粉末衍射等手段进行表征;
短句来源
    The three complexes of rare earth nitrates with methionine in aqueous media are prepared, and the general formula of complexes is RE(Met)(NO 3) 3·H 2O(RE=Er,Yb,Y;Met=Methionine). Some physical and chemical properities of these compounds have been studied by the methods of chemical analyses, elemental analyses, molar conductivity, IR spectra, UV spectra, TG GTG and X ray powder diffraction .
    水相中制得三个硝酸稀土盐与蛋氨酸的配合物.通过化学分析、元素分析、摩尔电导、红外分析、紫外光谱、TG-DTG及X-射线粉末衍射等方法研究了这些配合物的一些物理和化学性质.确定其通式为RE(Met)(NO3)3·H2O(RE=Er,Yb,Y;Met=DL-α-Methionine)
短句来源
    ? The crystal structure of RbYBI3 is determined by Xray powder diffraction method, and its crystal structure is refined by Rietveld technique.
    用X射线粉末法确定了RbYbI3的晶体结构,并用Rietveld技术精化了结构。
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  ray powder
X-ray powder diffraction results show that the as-grown SrWO4 single crystal belongs to tetragonal system and I41/a space group.
      
The structures of the CdSe quantum dots were determined by X-ray powder diffraction (XRD) and transmission electron microscopy (TEM).
      
The thermal decomposition of CeO2 nanocrystalline precursor prepared by chemical precipitation method was investigated using thermo-gravimetric/differential scanning calorimetry (TG/DSC) and X-ray powder diffraction (XRD).
      
The sample was characterized by X-ray powder diffraction and transmission electron microscopy (TEM).
      
The changes in the physicochemical properties of MoO3 have been investigated using techniques such as X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and ultraviolet and visible spectroscopy (UV-vis).
      
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The phase equilibrium relationships in the system La_2O_3-BeO were examined by quenching method together with microscopic and X-ray powder techniques. Two binary compounds: La_2O_3·2BeO and 3La_2O_3·2BeO have been identified. The latter is able to take up excess BeO in solid solution, the homogeneous region of which extends over the composition range of 3La_2o_3·2BeO-La_2O_3·BeO. The melting point of La_2O_3.2BeO was determined to be 1363±3℃, whereas 3La_2O_3·2BeO melts incongurently at 1510±10℃. Three...

The phase equilibrium relationships in the system La_2O_3-BeO were examined by quenching method together with microscopic and X-ray powder techniques. Two binary compounds: La_2O_3·2BeO and 3La_2O_3·2BeO have been identified. The latter is able to take up excess BeO in solid solution, the homogeneous region of which extends over the composition range of 3La_2o_3·2BeO-La_2O_3·BeO. The melting point of La_2O_3.2BeO was determined to be 1363±3℃, whereas 3La_2O_3·2BeO melts incongurently at 1510±10℃. Three invariant points have been located at 1356±2℃, 40.8 mole% LaO_(1.5); 1362±4℃, 51 mole% LaO_(1.5); and 1510±10℃, 66 mole% LaO_(1.5); with the coexistence of BeO-La_2O_3·2BeO-liquid; La_2O_3·2BeO-3La_2O_3·2BeO_(s.s)-liquid;and 3La_2O_3·2BeO-La_2O_3-liquid respectively.Indexing of the X-ray powder patterns reveals that La_2O_3·2BeO and 3La_2O_3·2BeO belong to orthorhombic and hexagonal symmetry respectively. Their lattice parame-ters and crystallo-optic properties are given.The formation and stability of lanthanum beryllates were discussed in view of crystal chemical principles. In comparison with the corresponding silicates as well as borates the lower stability of lanthanum beryllates can be ascribed mainly to the lower electrostatic binding strength of the Be-O bond, which would account for the liability of dissociation of beryllium-oxygen polyacidic ions at high temperatures.

采用淬火法以及显微镜和X-射线粉末法研究了La_2O_3-BeO系统的相关系,并作出相图。在这个系统中包含有La_2O_3·2BeO和3La_2O_3·2BeO两个化合物,后者可以溶解过量的氧化铍成固溶体,均相区域扩展于3La_2O-3·2BeO-La_2O_3·BeO成份范围内。 La_2O_3·2BeO的熔点是1363±3℃,而3La_2O_3·2BeO在1510±10℃分解熔融。三个不变点是:1356±2℃、40.8%LaO_(1.5)(BeO-La_2O_3·2BeO-液体);1362±4℃、51%LaO_(1.5)(La_2O_3·2BeO—3La_2O_3·2BeO固溶体—液体);和1510±10℃、66%LaO_(1.5)(3La_2O_3·2BeO-La_2O_3-液体)。 利用X一射线粉末法衍射数据,确定La_2O_3·2BeO与3La_2O_3·2BeO分别属于斜方晶系和六方晶系,并测定了它们的结晶光学性质。 从结晶化学的观点讨论了铍酸镧的形成及其稳定性。与相应的硅酸盐和硼酸盐相比较,由于铍氧镧具有较低的静电键强,可以说明在高温时铍酸镧的分解熔融行为。

Reaction sintered Si_3N_4-SiC has been studied with silicon and carbon powder as start-ing materials. Some physical properties and high temperature strength of the specimens ha-ve been determined.Thick specimens prepared with such materials may be nitrided morecompletely than those with silicon powder alone. X-ray powder diffraction analysis showsthat reaction sintering Si_3N_4-SiC consists of a large portion of α-Si_3N_4 With β-Si_3N_4 andβ-SiC in minor amounts. The role of carbon has been preliminarily...

Reaction sintered Si_3N_4-SiC has been studied with silicon and carbon powder as start-ing materials. Some physical properties and high temperature strength of the specimens ha-ve been determined.Thick specimens prepared with such materials may be nitrided morecompletely than those with silicon powder alone. X-ray powder diffraction analysis showsthat reaction sintering Si_3N_4-SiC consists of a large portion of α-Si_3N_4 With β-Si_3N_4 andβ-SiC in minor amounts. The role of carbon has been preliminarily discussed.

以Si+C作为原料,研究了反应烧结氮化硅-碳化硅,测量了一些物理性能和高温强度。这种材料与反应烧结氮化硅相比,能使尺寸较厚的制品氮化完全。X射线分析指出,这种材料是由大量的α-Si_3N_4和少量β-Si_3N_4、β-SiC组成。对碳的作用进行了初步讨论。

The pseudo-binary system KIO_3-CsIO_3 has been studied by means of XRD and DTA.A con-tinuous solid solution was formed at temperatures between the melting point and the de-composition temperature(330℃), and remained metastably at room temperature for quite along period.The solid solution finally decomposed into a mixture of two phases after abouthalf year storing at room temperature. The lattice spacing variation of the solid solutionwith its composition has been detected by means of X-ray powder method....

The pseudo-binary system KIO_3-CsIO_3 has been studied by means of XRD and DTA.A con-tinuous solid solution was formed at temperatures between the melting point and the de-composition temperature(330℃), and remained metastably at room temperature for quite along period.The solid solution finally decomposed into a mixture of two phases after abouthalf year storing at room temperature. The lattice spacing variation of the solid solutionwith its composition has been detected by means of X-ray powder method.

本文用X射线物相分析和差热分析法研究了KIO_3-CsIO_3赝二元系。在高温时它们形成连续固溶体,并能亚稳到室温。在室温长期搁置(半年以上)会完全分解,形成spinodal型分解的相图。用X射线粉末法测量了此连续固溶体的点阵常数随成分的变化。

 
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