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配合物前驱
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  complex precursors
     Synthesis of Y_2O_3:Eu~(3+) nanocrystalline by thermal decomposition of rare earth complex precursors
     稀土配合物前驱体热分解法合成Y_2O_3:Eu~(3+)纳米材料
短句来源
     Nanosized Y 2O 3∶Eu and Gd 2O 3∶Eu materials were synthesized by glycine assistant combustion method and thermal decomposition of amorphous complex precursors.
     以甘氨酸辅助的燃烧法和非晶态稀土DTPA配合物前驱体热分解法制备了Y2 O3 ∶Eu和Gd2 O3 ∶Eu纳米材料。
短句来源
  “配合物前驱”译为未确定词的双语例句
     XRD patterns show that Y 2O 3∶Eu is cubic and whether Gd 2O 3∶Eu can be cubic or monoclinic depends on the different decomposition temperatures, which also consisted with the luminescent spectra.
     X射线衍射表明燃烧法和配合物前驱体热分解法制备的纳米Y2 O3 ∶Eu均为立方相 ,而Gd2 O3 ∶Eu纳米材料则随制备条件不同可得到立方相或单斜相两种产物 ,发射光谱证实了这一结论。
短句来源
     using Pd(acac)2 as precursor,and the solvent with strong polarity may raise catalytic activity of Pd/C compared with inorganic chemical precursors.
     以Pd(acac)2作前驱体,以及使用极性较强的溶剂与用无机配合物前驱体相比,制备的Pd/C催化剂活性较高;
短句来源
     Nano-scaled La2O3 were prepared by organic chelate precursor technology, and nano-scaled composite Si-Al-Mn and Si-Al-Cu synthesized by chemical precipitation method. The as-prepared La2O3, Si-Al-Mn and Si-Al-Cu were doped into SrTiO3 as dopant, to improve the sintering characteristics and optimizing electrical properties.
     为了改善材料烧结性和优化电性能,采用有机配合物前驱体法制备La_2O_3施主掺杂剂的纳米粉体,采用化学共沉淀法分别制备Si-Al-Mn、Si-Al-Cu受主掺杂剂及助溶剂复合纳米粉体,对SrTiO_3进行纳米掺杂改性。
短句来源
     The valent-variable transition metal oxide V_2O_5 may complex with multi-dentates heterocycle ligands contained nitrogen, by controlling of pH values in microwave reactor.
     具有变价特性的过渡族金属氧化物V_2O_5,与多种含氮多齿杂环有机配体在微波条件下,变化pH值得到了一系列配合物前驱体。
短句来源
     Nanomaterial of rare-earth composite oxide LaFeO_3 with the structure of pervoskite type was synthesized by a coordination complex thermal decomposition method,the precursor was prepared by a chemical precipitation method of K_3 and La(NO_3)_3·nH_2O.
     以无机物K3[Fe(CN)6]和La(NO3)3.nH2O为原料,用热分解配合物前驱体法制备了LaFeO3纳米粉体.
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  相似匹配句对
     Isomerism in Complexes
     配合物的异构现象
短句来源
     The stacking naphthylene groups in complexes 3?
     配合物3?
短句来源
     RETURN AND ADVANCE
     回归与前驱
短句来源
     ③premonitory symptoms;
     ③前驱病史。
短句来源
     The vibrational frequencies and vibrational modes of reactants, precursor complexs, transition state, successor complex and product were analyzed.
     分析了反应物 ,前驱配合物 ,过渡态 ,后继配合物和产物的振动频率及振动模式。
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  complex precursors
The membrane surfaces have been modified by the alkoxide method using colloidal organic solutions of metal complex precursors.
      
Complex Precursors for Doped Lanthanum Chromite Synthesis
      
This paper deals with the preparation of LaCr1-xMxO3 (M = Ni, Cu, x = 0 - 0.2) from complex precursors isolated in the La(NO3)3-Cr(NO3)3-M(NO3)2-urea system.
      
The isolated complex precursors were characterized by atomic absorption spectrometry, electronic, and FT-IR spectra, as well as, by thermal analysis.
      
Application of known dialkyl ketene di- and trimerization to more complex precursors could readily open the route to highly functionalized symmetrical cyclobuta-1,3-diones and cyclohexa-1,3,5-triones.
      
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Nanoscale Y 2O 3∶Eu phosphors were prepared by thermal decomposition of the rare earth carboxylic acid complexes. The structure, size and morphology of particles were characterized by XRD and HRTEM. The cell parameters of nanoscale Y 2O 3∶Eu are related with the doping concentration of Eu 3+ , annealing temperature and the ratio of rare earth ions(Re 3+ )and carboxylic acid. The size of Y 2O 3∶Eu nanoparticle can be controlled by modifying the ratio of Re 3+ and ligand in the precursor. The...

Nanoscale Y 2O 3∶Eu phosphors were prepared by thermal decomposition of the rare earth carboxylic acid complexes. The structure, size and morphology of particles were characterized by XRD and HRTEM. The cell parameters of nanoscale Y 2O 3∶Eu are related with the doping concentration of Eu 3+ , annealing temperature and the ratio of rare earth ions(Re 3+ )and carboxylic acid. The size of Y 2O 3∶Eu nanoparticle can be controlled by modifying the ratio of Re 3+ and ligand in the precursor. The excitation spectra shift towards the red when the content of Eu 3+ is increased. The emission intensity is related with the composition of the complexes, the annealing temperature and the concentration of Eu 3+ .

以稀土羧酸配合物为前驱体, 采用快速热分解方法制备了纳米Y2O3∶Eu 荧光材料,进行了结构、尺寸及形貌表征. 随着Eu3+ 掺杂浓度的提高, 样品的晶胞参数加大, 当Eu3+掺杂量高达30% 时, 体系仍能保持Y2O3 基质的立方相结构; 样品的晶粒度与退火温度及配合物前驱体组成有关. 退火温度越高、前驱体中Re3+ 与配体的摩尔比越小, 样品的粒径越大. 随着Eu3+ 掺杂浓度的提高, 激发光谱红移, 发射强度在掺杂浓度分别为5% 和10% 时有极大值; 发射强度与Re3+ 和配体摩尔比及退火温度有关.

The preparative methods of nanostructured metal oxides are reviewed. Particularly the principles and features of the organic coordination precursor methods, including polyethylene glycol, gelatin and stearic acid methods, are discussed. The oxide nanocrystals has been used as magnetic and microwave absorbing materials, catalysts and strengthening fillers for modification of plastics.$

综述了氧化物及复合氧化物纳米晶的各种制备方法及特点 ,重点介绍了有机配合物前驱体法 聚乙二醇法、明胶法和硬脂酸法制备氧化物纳米晶的原理、特点以及在磁性材料、电磁波吸收材料、催化剂和塑料改性方面的若干应用

Nanosized Y 2O 3∶Eu and Gd 2O 3∶Eu materials were synthesized by glycine assistant combustion method and thermal decomposition of amorphous complex precursors. XRD patterns show that Y 2O 3∶Eu is cubic and whether Gd 2O 3∶Eu can be cubic or monoclinic depends on the different decomposition temperatures, which also consisted with the luminescent spectra. The size and morphology of the nanoparticles were characterized by TEM and SEM.

以甘氨酸辅助的燃烧法和非晶态稀土DTPA配合物前驱体热分解法制备了Y2 O3 ∶Eu和Gd2 O3 ∶Eu纳米材料。X射线衍射表明燃烧法和配合物前驱体热分解法制备的纳米Y2 O3 ∶Eu均为立方相 ,而Gd2 O3 ∶Eu纳米材料则随制备条件不同可得到立方相或单斜相两种产物 ,发射光谱证实了这一结论。通过透射电子显微镜、扫描电子显微镜对不同方法制备的纳米材料的尺寸、形貌也进行了表征

 
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