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   powder x ray diffraction 的翻译结果: 查询用时:0.209秒
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powder x ray diffraction     
相关语句
  粉末x衍射
     Mothods: X ray diffraction Fourier patterns of 4 samples of artificial calculus Bovis, hyodeoxycholic acid and cholic acid were analyzed and calculated by Powder X ray diffraction analysis.
     方法 :应用粉末X衍射分析法对 4种人工牛黄样品及猪去氧胆酸、胆酸的X衍射Fourier谱进行分析计算。
短句来源
     Objective:To analyze and establish X ray diffraction characteristic marked peaks of artificial calculus Bovis by Powder X ray diffraction Fourier pattern and identify them. Artifical Calculus Bovis is usually used to instead the natural Calculus Bovis to make up its scarce resource.
     目的 :为弥补珍贵中药材天然牛黄之奇缺 ,常用人工牛黄代之 ,应用粉末X衍射Fourier谱 ,分析建立人工牛黄的X衍射特征标记峰 ,并对其进行鉴定。
短句来源
     Objective: To set up a method for analyzing and distinguishing all the chemical components in natural Caoulus Bovis Method: Powder X ray diffraction analyses was used to analyze four samples of natural Caculus Bovis, and the X ray diffraction Fourier pattern was obtained for distinguishing natural Caculus Bovis Result and Conclusion: The method can be used for distinguishing animal medicinal materials
     方法 :应用粉末X衍射分析法 ,通过对 4个天然牛黄样品的分析计算 ,得到了可用于鉴别天然牛黄的X衍射Fourier图谱 (几何拓扑图形与特征标记峰值 )。 结果与结论 :X衍射Fourier图谱可用于正品天然牛黄与非正品牛黄以及进口天然牛黄、人工培植牛黄的鉴别。
短句来源
     According to the theory of Powder X ray diffraction method for identification of the Chinese Traditional Medicine, we programmed a software called “X ray Diffraction Fourier Pattern Database System for Chinese Traditional Medicine”, which has functions such as search, browse, edition, automatic identification of the diffraction data and patterns. Especially in the function of automatic pattern identification, we realized the pattern congruence, which has a good application value.
     根据粉末X衍射分析方法鉴定中药材的原理 ,建立了具有浏览、编辑、衍射数据检索和衍射图谱的自动识别等功能的“中药材粉末X衍射Fourier图谱数据库” ,特别是在衍射图谱的自动识别上 ,实现了未知衍射图谱的图形识别和图谱之间的叠合 ,具有一定的应用价值 .
短句来源
  x-射线粉末衍射
     Methods: Silibinin solid dispersions were obtained with urea, PVP and poloxamer188 as carriers by melting and coevaporation methods. Differential thermal analysis and powder X ray diffraction were used to determine the status of drug in carriers, and the dissolution characteristics in vitro were studied in simulated gastric juice.
     方法 :选择尿素、聚乙烯吡咯烷酮 ( PVP)、泊洛沙姆 188等 3种载体 ,用熔融法和共沉淀法制备水飞蓟宾固体分散体 ,并进行差热分析、X-射线粉末衍射分析以鉴别药物在载体中的存在状态 ,最后进行了体外溶出研究。
短句来源
     A pair of p methylbenzsulfo α naphthyamine and p methylbenzsulfo β naphthyamine isomers have been synthesized. IR, UV and powder X ray diffraction analyses have characterized the structures, the quantum chemistry calculation has been performed using AM1 program.
     合成了对甲苯磺酰 -α萘胺 (A)和对甲苯磺酰 -β萘胺 (B)一对同分异构体 ,用红外光谱、紫外光谱和多晶 X-射线粉末衍射方法进行了结构表征 ,并利用 AM1程序进行了量子化学计算。
短句来源
  粉末x射线衍射
     The lattice constants of crystalline calcium potassium sodium orthophosphate [Ca2KNa(PO4)2] were investigated with wide angle powder X ray diffraction (XRD) method.
     通过大角度的粉末X射线衍射测定了正磷酸钠钾钙犤(Ca2KNa(PO4)2)犦晶体陶瓷的晶格参数。
短句来源
     METHODS: Powder X ray diffraction Fourier fingerprint pattern was adopted.
     方法:采用粉末X射线衍射Fourier指纹图谱鉴定法。
短句来源
     METHODS: Powder X ray diffraction fourier fingerprint pattern.
     方法 :采用粉末X射线衍射Fourier指纹图谱鉴定法。
短句来源
     Its crystal structure and chemical formula were determined by powder X ray diffraction and thermal gravity analysis. Belonged to α MnO 2. Its structure and chemical formula is α MnO 2 and MnO 2·0.4H 2O respectively.
     通过粉末X射线衍射以及热重分析确证了其晶体结构为α MnO2 ,化学式为MnO2 ·0 .4H2 O。
短句来源
     Methods Powder X ray diffraction Fourier pattern was used.
     方法 采用粉末 X射线衍射 Fourier谱鉴定法。
短句来源
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  采用粉末x射线衍射
     Methods Powder X ray diffraction Fourier pattern was used.
     方法 采用粉末 X射线衍射 Fourier谱鉴定法。
短句来源
     METHODS: Powder X ray diffraction fourier fingerprint pattern.
     方法 :采用粉末X射线衍射Fourier指纹图谱鉴定法。
短句来源
     METHODS: Powder X ray diffraction Fourier fingerprint pattern was adopted.
     方法:采用粉末X射线衍射Fourier指纹图谱鉴定法。
短句来源

 

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      powder x ray diffraction
    We characterized all samples by powder x-ray diffraction to determine phase purity and the long-range average crystal structure and symmetry.
          
    We plan to use powder X-ray diffraction in the near future.
          
    We plan to use micro-Raman and powder X-ray diffraction in the near future.
          
    The synthesized samples were characterized by powder X-ray diffraction and N2 adsorption isotherms.
          
    The samples were analysed by powder X-ray diffraction in the form of hand-pressed wafers, in a Shimadzu XD3A powder diffractometer at 20 mA and 30 kV.
          
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    Reported here is a novel dineuclear molybdenum-sulfur complex with two different bridge-ligands, {(CH3)4N}2K{MO2OS2NO)2(S2)2S5} H2O(1).The reaction of molybdate ions with potassinum polysulfide in aqueous solution in the presence of hydroxylamine hydrochloride leads to the formation of the dark orange-red crystalline compound (1), which was characterized not only by elemental analysis, 1R spectrum and powder X-ray diffraction, but by single-crystal X-ray structure analysis...

    Reported here is a novel dineuclear molybdenum-sulfur complex with two different bridge-ligands, {(CH3)4N}2K{MO2OS2NO)2(S2)2S5} H2O(1).The reaction of molybdate ions with potassinum polysulfide in aqueous solution in the presence of hydroxylamine hydrochloride leads to the formation of the dark orange-red crystalline compound (1), which was characterized not only by elemental analysis, 1R spectrum and powder X-ray diffraction, but by single-crystal X-ray structure analysis as well. The complex (1) shows principal IR absorptions (cm-1) at ca. 1550(br. vs) {v(NO)}, 600(m) { δ(MoN)}, 790,415(m) {v(MoOMo)}, 516 ,525 { v (SS)} , 450(m) { v(MoSMo)} ,and 320, 330(m) { v(MoS)}.The compound (1) crystallizes with a=13.3201(22), b=17.3772(23)., c=13.2686(34)A, β = 107.9339(16) in the monoclinic space group P21/c and Z=4. 3576 independent reflections are collected on our CAD-4 diffractometer with Sinθ/λ<0.595A-1, MoKa and refined to R=0 0448,The detail structural data of the molecule and crystal has also been given in this paper

    本文报导[(CH_3)_4N]_2K[Mo_2OS_2(NO)_2(S_2)S_5]·H_2O的合成和晶体结构。该化合物晶体属于单斜晶系,所属的空间群为P2_1/c。晶胞参数为:a=13.320(2),b=17.377(2),c=13.269(3),β=107.93(2)°,Z=4。在CAD—4四圆衍射仪上,用MoKα射线收录了3576个独立衍射数据(I≥3σ(I))。晶体结构用直接法解出,经Fourier合成和全矩阵最小二乘方修正,最后偏离因子R=0.045。结构分析表明,晶体中Mo—Mo间距为3.421,二钼原子间未成键。Mo原子周围呈近似五角双锥的七配位构型。本结构的特征在于二Mo原子间除双硫桥外还存在氧桥。

    Further studies on the phase transition mechanism of LiIO3 at normal pressure have been made by means of DTA, heat-treatment, and powder X-ray diffraction. There are three phases of LiIO3, β,η,δ, existing relatively stably at high temperatures and they can directly melt respectively. Their melting points are as follows: phase β, 432℃; phase η, 421℃; phase δ, 416℃. The melting points, thermal processes and the exiting temperature ranges ail show that the order of their thermodynamical...

    Further studies on the phase transition mechanism of LiIO3 at normal pressure have been made by means of DTA, heat-treatment, and powder X-ray diffraction. There are three phases of LiIO3, β,η,δ, existing relatively stably at high temperatures and they can directly melt respectively. Their melting points are as follows: phase β, 432℃; phase η, 421℃; phase δ, 416℃. The melting points, thermal processes and the exiting temperature ranges ail show that the order of their thermodynamical stability is: β > η > δ. In dry air and at room temperature, the phase ζ of LiIO3, which changes to phase β when it is heated to 335℃ at 10℃/min, stands long periods of time without any change as well as phase α and β . In the existing temperature range of α -LiIO3, phase ζ does not transform into phase α although it is heat-treated for a long time. The temperature of phase transition of ζ to β is higher than that of α to β. The existence of phase β in the phase ζ has a promotive effect on the phase transition of ζ to β just as the case of α to β. The existence of phase ζ in the phase α has also a promotive effect on α to β . The phase θ, like the phase γ. is also an intermediate metastable phase in the phase transition processes of LiIO3.

    本文用差热分析、恒温热处理、X射线衍射等方法,对LiIO_3在常压的相变过程做了进一步的研究。对于LiIO_3的常压相变机制有了较为详尽的了解 。并发现LiIO_3在高温可相对稳定存在三个相:β,η和δ,它们可分别自行熔化,其熔点相应为:432℃,421℃和416℃,从它们的热经历和存在的温度范围,表明其稳定性顺序为β>η>δ。在室温干燥空气中,与α相和β相共存的还有相,相升温放热转变为β相。在α相存在的温区里,相经过长时间热处理并不转变为α相,同时,相转变为β相的温度比α相高。与α→β的情况相同,β对→β也有诱导作用。而且的存在对α→β也有促进作用。θ相(θ_1与θ_2)与γ相一样,是相变过程的中间过渡相。

    Recently, a new compound was synthesized in CaO-MgO-SiO_2-CaCl_2 system. The compound belongs to the cubic system, with regular octahedral shape, density D_(obs)=3.08 g/cm~3 and refraction index n=1.6910. The crystal is stable in the range of 810~1260℃ and is incongruent at about 1265℃. From chemical analysis, its molecular formula is Ca_8Mg (SiO_4)_4Cl_2. From powder X-ray diffraction, the unit-cell parameter is α=15.064(?) and crystal lattice is a face-centered cubic lattice. By using...

    Recently, a new compound was synthesized in CaO-MgO-SiO_2-CaCl_2 system. The compound belongs to the cubic system, with regular octahedral shape, density D_(obs)=3.08 g/cm~3 and refraction index n=1.6910. The crystal is stable in the range of 810~1260℃ and is incongruent at about 1265℃. From chemical analysis, its molecular formula is Ca_8Mg (SiO_4)_4Cl_2. From powder X-ray diffraction, the unit-cell parameter is α=15.064(?) and crystal lattice is a face-centered cubic lattice. By using the four-circle diffractometer, it is found that the unit cell parameter is α=15.0653(?), space group is Fd_3m, eight molecules are contained in a cell (Z=8). The crystal structure is determined by direct method (SHELXTL).

    在CaO-MgO-SiO_2-CaCl_2四元体系中,我们最近合成了一个新化合物。该化合物属于立方晶系,晶形为六角八面体,比重D_(abs)=3.08g/cm~2,折射率n=1.6910。在差热曲线上得知晶体在810~1260℃范围内稳定,1265℃左右不一致熔融。由化学分析确定分子式为Ca_8Mg(SiO_4)_4Cl_3。根据粉末X射线衍射测定晶胞参数α=15.064(?),晶胞类型为面心立方格子;由四圆单晶衍射仪测得晶胞参数α=15.0653(?)。空间群为Fd3m,Z=8,并由直接法解出了晶体结构。

     
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