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   chemical preparation method 的翻译结果: 查询用时:0.203秒
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chemical preparation method
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  “chemical preparation method”译为未确定词的双语例句
     In Chapter 4, several measures for resistance reduction are discussed, including the external expanding method, the deep well method, the expanding net method, the grounding net under water method, and the chemical preparation method.
     第四章介绍了几种降阻措施,如外延法,深井式法,扩网及水下地网法,降阻剂法等。
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     A chemical preparation method for unreconstructed ideally H terminated Si(111) surface for invesigation of surface structur with LEED apparatus is described.
     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。
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     The recent progresses of preparation method of lanthanum gallate based electrolyte were presented,this method include solid state reaction method and pechini,sol-gel,glycine-citrate combustion et al wet chemical preparation method.
     综述了镓酸镧基固体电解质的制备方法:包括固相反应法和Pechini法、溶胶凝胶法、甘氨酸-硝酸盐燃烧法、硝酸盐分解法等湿化学方法。
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     Based on this, for the first time, the paper brings forward a new chemical preparation method of mesoporous composite absorbent, which taking natural zeolite as the matrix by adopting a destructive pore-making technique to etch on the porous structure and to create a new mesoporous structure within the scope of molecular dimensions, then, use a physical chemistry method to modify the surface property.
     并从上述内因出发,利用天然沸石作为基体,首次提出一种在分子尺度范围内可控地破坏孔洞结构,进行造孔的介孔固体制备方法,再通过物理化学方法改变材料的表面性质,制备出了一种介孔复合吸附材料。
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     化学法制备Al_2O_3纳米线
     Study on the Preparation of Adrenochrome by Chemical Method
     肾上腺素红的化学法制备研究
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     Preparation of insulating firebrick by chemical bubbling method
     化学发泡法制备隔热耐火砖
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     Preparation of Nickle Nanoparticles by Chemical Reduction Method
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  chemical preparation method
In addition the chemical preparation method was controlled by assaying NBS (NIST) SRM 909.
      


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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