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chemical preparation methods
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  化学制备方法
     Study of Chemical Preparation Methods of CdSe Nanomaterials
     CdSe纳米材料化学制备方法的研究
短句来源
     Five optical characteristics that are much more excellent than traditional luminescent materials and the soft chemical preparation methods of nanoscale luminescent materials of rare earth were summarized.
     概述了纳米稀土发光材料具有的、为传统发光材料无法媲美的5个光学特性,介绍了纳米稀土发光材料的软化学制备方法
短句来源
     This article has reviewed the progress of studies on chemical preparation approaches for nano-scale iron oxide, and discussed a number of chemical preparation methods, such as colloid chemical, hydrothermal, solid phase, sedimentation, and hydrolysis processes.
     综述了纳米氧化铁化学制备方法的研究进展 ,对胶体化学法、水热法、固相法、沉淀法和水解法等化学制备方法进行了探讨。
短句来源
     The recent developments of the hollow polymeric nanospheres are reviewed,with the emphasis on the chemical preparation methods. The characterization techniques, measurements of properties, applications and prospects of the hollow polymeric nano spheres are also discussed.
     本文介绍空心聚合物纳米球的发展现状 ,着重阐述空心聚合物纳米球的化学制备方法 ,对各种制备方法进行了比较 ,并介绍了空心聚合物纳米球的表征、性能检测技术以及应用现状和前景
短句来源
     The chemical preparation methods of N benzylglycine ethyl ester were introduced,i. e. the synthetic technique using ethyl acetate halide, glycine ethyl ester, ethyl triazoacetate, and glyoxylate ethyl ester ethyl hemiacetal as starting raw materials.
     叙述了国内外N 苄基甘氨酸乙酯的几种化学制备方法,即分别以卤代乙酸乙酯、甘氨酸乙酯、叠氮乙酸乙酯和乙醛酸乙酯乙基半缩醛为起始原料的合成工艺。
短句来源
更多       
  制备方法
     Study of Chemical Preparation Methods of CdSe Nanomaterials
     CdSe纳米材料化学制备方法的研究
短句来源
     Five optical characteristics that are much more excellent than traditional luminescent materials and the soft chemical preparation methods of nanoscale luminescent materials of rare earth were summarized.
     概述了纳米稀土发光材料具有的、为传统发光材料无法媲美的5个光学特性,介绍了纳米稀土发光材料的软化学制备方法
短句来源
     This article has reviewed the progress of studies on chemical preparation approaches for nano-scale iron oxide, and discussed a number of chemical preparation methods, such as colloid chemical, hydrothermal, solid phase, sedimentation, and hydrolysis processes.
     综述了纳米氧化铁化学制备方法的研究进展 ,对胶体化学法、水热法、固相法、沉淀法和水解法等化学制备方法进行了探讨。
短句来源
     The recent developments of the hollow polymeric nanospheres are reviewed,with the emphasis on the chemical preparation methods. The characterization techniques, measurements of properties, applications and prospects of the hollow polymeric nano spheres are also discussed.
     本文介绍空心聚合物纳米球的发展现状 ,着重阐述空心聚合物纳米球的化学制备方法 ,对各种制备方法进行了比较 ,并介绍了空心聚合物纳米球的表征、性能检测技术以及应用现状和前景
短句来源
     The chemical preparation methods of N benzylglycine ethyl ester were introduced,i. e. the synthetic technique using ethyl acetate halide, glycine ethyl ester, ethyl triazoacetate, and glyoxylate ethyl ester ethyl hemiacetal as starting raw materials.
     叙述了国内外N 苄基甘氨酸乙酯的几种化学制备方法,即分别以卤代乙酸乙酯、甘氨酸乙酯、叠氮乙酸乙酯和乙醛酸乙酯乙基半缩醛为起始原料的合成工艺。
短句来源
更多       
  “chemical preparation methods”译为未确定词的双语例句
     Optical Property and Soft Chemical Preparation Methods of Nanoscale Rare Earth Luminescent Materials
     纳米稀土发光材料的光学特性及软化学制备
短句来源
     In addition, it points that it is necessary for us to lay a strong emphasis on the study of chemical preparation methods and advanced sintering technology, while searching after new composition systems.
     最后指出在微波介质陶瓷领域,应在不断探索新成分体系的同时,重视对化学制粉法和新型烧结技术的研究和开发。
短句来源
     The advantages and disadvantages of different chemical preparation methods,such as precipitation method,colloid-chemical method,sol-gel method,hydrothermal method,hydrothermal stripping method,pressure-thermalcrystallization method,solid phase synthesis,force-hydrolysis and freeze-drying method are also analyzed.
     分析了沉淀法、胶体化学法、溶胶—凝胶法、水热法、水热—反萃法、压力—热晶法、固相法、强迫水解法、冷冻干燥法等不同方法制备超细氧化铁的优缺点。
短句来源
     The chemical preparation methods for copper and zinc in serum were studied in terms of reducing procedure blank and fitting measurement of TIMS.
     由于锌和铜都是易受污染的元素,本工作建立了仅用少量硝酸消解的低流程本底和适于热电离质谱测量的生物基体血清中痕量铜和锌的样品前处理方法;
短句来源
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  chemical preparation methods
Two wet chemical preparation methods are described for yttria-doped tetragonal zirconia powders.
      
Model supports consisting of a thin layer of SiO2 on a silicon single crystal have been used to study ZrO2/SiO2/Si model catalysts made by wet chemical preparation methods.
      


A chemical preparation method for unreconstructed ideally H terminated Si(111) surface for invesigation of surface structur with LEED apparatus is described. An electron bombardment heating assembly is designed and built in our own lab. The sample holde can be cooled to LN2 temperature and heatal to 800℃ for crystal cooling and annealing. Preliminary observations of H termination of Si (111) surface are presented, including evidence that the surface is perfectly covred with silicon monohydryde as the...

A chemical preparation method for unreconstructed ideally H terminated Si(111) surface for invesigation of surface structur with LEED apparatus is described. An electron bombardment heating assembly is designed and built in our own lab. The sample holde can be cooled to LN2 temperature and heatal to 800℃ for crystal cooling and annealing. Preliminary observations of H termination of Si (111) surface are presented, including evidence that the surface is perfectly covred with silicon monohydryde as the study of LEED patterns suggest.

本文描述了一种得到无重构的理想的氢终止Si(111)表面的化学处理方法,用这种方法得到的表面,可以用低能电子衍射谱仪(LEED)进行结构研究。本实验使用我们自己设计加工的电子背轰击式加热器,作品可加热到800℃以上,亦可冷却到液氮温度。文中对氢终止Si(111)表面的研究的初步结果作一概述,给出了表面覆盖氢化物的LEED研究证据。

Ce 0.5 Zr 0.5 O 2 solid solution was prepared by wet chemical preparation method under controlled conditions. The crystal structure of the solid solution after calcination at 923 K is face centered cubic (fluorite type) verified by XRD. The solid grain is super micro powder of fiber like. Diameter of the solid solution particle is 11 nm. In situ Raman spectra of the catalyst at 323~923 K in oxygen or hydrogen atmosphere give the strong Raman peaks at 450~470 cm -1 owing to the F ...

Ce 0.5 Zr 0.5 O 2 solid solution was prepared by wet chemical preparation method under controlled conditions. The crystal structure of the solid solution after calcination at 923 K is face centered cubic (fluorite type) verified by XRD. The solid grain is super micro powder of fiber like. Diameter of the solid solution particle is 11 nm. In situ Raman spectra of the catalyst at 323~923 K in oxygen or hydrogen atmosphere give the strong Raman peaks at 450~470 cm -1 owing to the F 2g Raman active mode characteristic of fluorite structure. The weak Raman peaks at 290~320 cm -1 , 570~620 cm -1 , 770~790 cm -1 and 1160~1190 cm -1 are also given. The Raman peaks have different changes according to the alteration of environmental conditions, such as redox atmosphere and temperature. The Raman peaks reveal that the crystal structure is deformed in the lattice by changing the external conditions, but at the same time the fluorite structure keeps unchanged.

控制合成条件以湿化学法制备了CeZrO(n(Ce)/n(Zr)=1)固溶体.XRD结果证实催化剂前体经923K焙烧后可获得立方相Ce0.5Zr0.5O2固溶体.TEM观察到固溶体颗粒大小均一(d=11nm)、分散,呈纤毛状.在氧化和还原气氛条件下分别对固溶体进行了原位拉曼光谱研究.结果表明,除450~470cm-1处出现面心立方晶格F2g拉曼活性模式对应的强拉曼谱峰外,290~320cm-1,570~620cm-1,770~790cm-1和1160~1190cm-1处分别出现弱峰或弱肩峰,各谱峰随样品处理条件改变而有不同的变化情况;固溶体的晶体结构会因氧化还原气氛以及温度等外界条件的不同发生畸变,但基本上保持为萤石构型.

The chemical preparation method and spectrum characteristics of YPO 4∶Pr 3+ nanocrystal powder are reported for the first time. The structure analysis shows that the sample is nano material with radius of about 20nm. A strong emission from 3P 1 level of Pr 3+ ion is observed under excitation at 3P 0 level by a Ar + laser set at 488nm. This is caused by the efficient cross relaxation energy transfer of { 1D 2× 3H 6→ 3P 1× 3H 4} between different Pr ...

The chemical preparation method and spectrum characteristics of YPO 4∶Pr 3+ nanocrystal powder are reported for the first time. The structure analysis shows that the sample is nano material with radius of about 20nm. A strong emission from 3P 1 level of Pr 3+ ion is observed under excitation at 3P 0 level by a Ar + laser set at 488nm. This is caused by the efficient cross relaxation energy transfer of { 1D 2× 3H 6→ 3P 1× 3H 4} between different Pr 3+ ions.

首次报道了纳米YPO4Pr3+粉末材料的化学制备方法和光谱特性,结构分析证实共沉淀法制得的样品为粒径20nm的纳米微晶.对激发Pr3+离子3P0能级下的光谱性能进行了测量,同在体材料中一样,得到了来自较高能级3P1强发射.研究表明这是由不同Pr3+间有效的{1D2×3H6→3P1×3H4}交叉弛豫能量传递造成的

 
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