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hollow spheres     
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  空心球
    Preparation of SiC Hollow Spheres from SiO_2@PPy Core/Shell Structure
    利用具有核壳结构的SiO_2@PPy粒子制备SiC空心球
短句来源
    Preparation of SiO_2,TiO_2,SnO_2 hollow spheres by colloidal carbon spheres
    利用胶体碳球为模板制备SiO_2、TiO_2、SnO_2空心球
短句来源
    Preparation of Silica and SiO_2/TiO_2 Hollow Spheres using Supercritical CO_2
    用超临界CO_2合成SiO_2/TiO_2空心球
    1. A solvothermal technique using KBH4 as the reductant, element S (Se) as the S (Se) source has been developed to fabricate metastable y-MnS hollow spheres and a-MnSe uniform nanospheres and nanorods.
    1.发展了溶剂热技术,用KBH_4作还原剂,单质硫(硒)作硫(硒)源,分别制备了γ-MnS空心球和α-MnSe均匀纳米球与纳米棒。
短句来源
    (2) MoS_2 hollow spheres with diameter of about 200 ~300 nm were synthesized successfully through a solvothermal route using Cyanex 301 as sulfur source and surface modification agent in the mixture of ethanol and distilled water(V:V=3:1) at a low temperature 190 ℃.
    (2)以酸性萃取剂Cyanex 301作为硫源和表面修饰剂,在醇-水混合溶剂(V:V=3:1)中采用溶剂热法,190℃下制备了粒径约200~300nm的MoS_2空心球,与文献比较此方法具有反应温度低,能耗小,条件温和易控制等优点;
短句来源
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  空心微球
    The results show that the products were hollow microspheres made of β- and α-NiS,while the hollow spheres were transformed from the α-NiS solid ones.
    结果显示,这些空心微球由β-NiS和α-NiS组成,从反应开始得到的α-NiS实心球通过内核的消溶演变而成.
短句来源
    The calculated results show that the simulated PSD data are in good agreement with the experimental date,which means that the proposed model for the SHMS is reliable and the combined method of GCMC and SIE is powerful for evaluation of the PSD of the silica hollow spheres.
    模拟结果显示,用孔径分布拟合的吸附数据和实验吸附等温线吻合良好,说明PSD能够十分有效地表示SiO2空心微球的微孔结构.
短句来源
  空心球的
    Preparation and characterization of analcime and sodalite composite hollow spheres
    方沸石和方钠石复合空心球的制备和表征
短句来源
    Self-assembly and Characterization of Nanostructural TiO_2/PS and TiO_2 Hollow Spheres
    纳米结构TiO_2/PS及TiO_2空心球的自组装与表征
短句来源
    Preparation and Characterization of Three-dimensionally Ordered SiC Hollow Spheres
    三维有序SiC空心球的制备及表征
短句来源
    TEM studies show that the hollow spheres with diameters ranging from 80 to 100 nm has been prepared. The range of wall thickness was estimated to be about 20~30 nm.
    TEM结果显示,ZnS空心球的直径在80~100 nm范围左右,其壳层的厚度约为20~30 nm.
短句来源
    It was found that the outer diameter(135-896 nm),the wall thickness(14-79 nm),BET specific surface area(50.8-5.0 m~(2)/g) and micropore volume(0.265-0.038 cm~(3)/g) of the achieved SiC hollow spheres can be tailored by utilizing carbon templates with different pore sizes or PMS solutions with different concentrations.
    所制备的S iC空心球的外径(135~896 nm)、球壳厚度(14~79 nm)、BET比表面积(50.8~5.0 m2/g)及微孔体积(0.265~0.038 cm3/g)受不同孔径的多孔碳模板(150~1 000 nm)或不同前驱体浓度的控制.
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  “hollow spheres”译为未确定词的双语例句
    Preparation and Photoluminescence of ZnS:Mn~(2+)/polystyrene Core-Shell Structures and ZnS:Mn~(2+) Hollow Spheres
    ZnS:Mn~(2+)/聚苯乙烯核壳及ZnS:Mn~(2+)中空球的制备和光谱性质(英文)
短句来源
    ZnS:Mn~2+ hollow spheres were obtained by heating the core-shell particles in air at 500 ℃ to drive off PS. The photoluminescence spectrum for the emission band of Mn~2+ peaked at 540 nm, and a 45 nm blue shift compared to that of corresponding bulk sample, was discussed based on the Mn-O octahedral distortion induced by shell structure.
    将核壳粒子在500℃灼烧除去PS核后,可以得到空心的ZnS:Mn2+微球,Mn2+的发射谱的峰位在540nm,与体相材料相比,蓝移了45nm,这可能是由于壳层结构引起Mn-O八面体畸变,进而导致能带结构变化引起的.
短句来源
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  hollow spheres
New approaches to stimuli-responsive polymeric micelles and hollow spheres
      
This article briefly describes some new approaches to stimuli-sensitive polymeric micelles and hollow spheres, which were developed in the authors' laboratory in recent years.
      
Hollow spheres of PNIPAM network were then obtained by biodegradation of the PCL core.
      
Both the core-shell spheres and hollow spheres show reversible size dependence on temperature change because of the phase transition of PNIPAM around 32°C.
      
(3) Complexation-induced micellization and transition between the micelles and hollow spheres.
      
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The addition of PS can reduce the dielectric constant of glass-ceramic substrate materials effec- tively,but reduce the flexural strength at the same time. Through building a hollow sphere model,we derive the expression of effective bulk modulus and Young's modulus of substrate materials. Accordingly, an equation related to the relationship between flexural strength and isolated pores porosity was deduced. The derived equation agrees with the experimental results relatively to some degree.

在玻璃陶瓷基板材料中加入PS有机球能有效地降低基板的介电常数,但同时影响基板的抗折强度。通过建立空心球力学模型,得到基板材料的有效体积模量和有效杨氏模量的表达式,从而推导出表达闭合孔孔隙率与抗折强度之间关系的公式。该公式与实验结果符合较好。

Grand canonical Monte Carlo (GCMC) simulation and statistics integral equation (SIE) have been used to determine the pore size distribution (PSD) of the silica hollow microspheres (SHMS).HRTEM,XRD and nitrogen adsorption results indicate the occurrence of disordered mesopores on the shells of SHMS.In the simulation,the SHMS have been modeled as cylindrical pore with pore size distribution according to the experimental data.The nitrogen is considered as Lennard Jones (LJ) spherical molecule.The completely analytical...

Grand canonical Monte Carlo (GCMC) simulation and statistics integral equation (SIE) have been used to determine the pore size distribution (PSD) of the silica hollow microspheres (SHMS).HRTEM,XRD and nitrogen adsorption results indicate the occurrence of disordered mesopores on the shells of SHMS.In the simulation,the SHMS have been modeled as cylindrical pore with pore size distribution according to the experimental data.The nitrogen is considered as Lennard Jones (LJ) spherical molecule.The completely analytical potential model proposed by Wang recently is applied to represent the interactions between the atoms inside the wall and the fluid molecules.The calculated results show that the simulated PSD data are in good agreement with the experimental date,which means that the proposed model for the SHMS is reliable and the combined method of GCMC and SIE is powerful for evaluation of the PSD of the silica hollow spheres.

用巨正则系综蒙特卡罗(GCMC)模拟方法结合统计积分方程(SIE)计算了SiO2空心微球球壳上的孔径分布(PSD).HRTEM、XRD及氮气吸附等实验测试表明,SiO2空心微球的球壳上有无序的介孔孔道.在模拟中,基于实验数据,将SiO2空心微球模型化为具有一定孔径分布的园柱孔,流体模型化为Lennard-Jones(LJ)球,流体分子和孔壁间的相互作用采用Wang等人犤10犦最近提出的完全解析的势函数描述.模拟结果显示,用孔径分布拟合的吸附数据和实验吸附等温线吻合良好,说明PSD能够十分有效地表示SiO2空心微球的微孔结构.

In this paper, it is demonstrated that the utility of poly-(ethylene glycol)(PEG), methacrylic acid(MAA) and sodium dodecylsulfate(SDS) can exert an exceptional control on the crystallization of ZnS by the in-situ polymerization of MAA monomers through addition of a certain amount of initiator, hereby provide a facile synthesis route to hollow ZnS spheres. The products obtained were characterized by using X-ray diffraction(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM), and UV-Vis...

In this paper, it is demonstrated that the utility of poly-(ethylene glycol)(PEG), methacrylic acid(MAA) and sodium dodecylsulfate(SDS) can exert an exceptional control on the crystallization of ZnS by the in-situ polymerization of MAA monomers through addition of a certain amount of initiator, hereby provide a facile synthesis route to hollow ZnS spheres. The products obtained were characterized by using X-ray diffraction(XRD), transmission electron microscopy(TEM), scanning electron microscopy(SEM), and UV-Vis optical absorption. TEM studies suggest that the hollow spheres with diameters ranging from 300 to 400 nm are obtained. The wall thickness was estimated to be about 50 nm. SEM images show that the wall is constituted of compact worm-like structures, which consist of well-aligned primary nanoparticles. It was also found that the variation of surfactant concentration drastically changed the morphology of the produced ZnS products due to the corresponding transformation of micelles′ structure. At a relative higher SDS concentration, ZnS spherical assemblies of platelike crystallites were obtained. The formation of the hollow spherical structure was interpreted in terms of the core-shell mechanism.

利用仿生合成方法 ,通过加入一定量的引发剂使甲基丙烯酸原位聚合 ,在聚乙二醇 (PEG)、聚甲基丙烯酸 (PMAA)和十二烷基硫酸钠 (SDS)的三元添加剂混合溶液体系中控制了合成硫化锌晶体 ,提出了一种简单易行的合成硫化锌空心球的新方法 .采用透射电子显微镜 (TEM)、扫描电子显微镜 (SEM)、X射线粉末衍射 (XRD)及紫外吸收光谱等手段对合成样品的形貌、结构及性能进行了表征 .TEM结果显示 ,Zn S空心球的直径约为 3 0 0~ 40 0 nm,其壳层的厚度约为 5 0 nm. SEM结果显示 ,空心球的外壳是由初级纳米粒子定向熔合排列形成的蠕虫状结构紧密组装而成 .由于相应的胶束结构的改变 ,表面活性剂 SDS浓度的变化明显改变了 Zn S产物的形貌 ,在较高浓度的 SDS溶液中得到了 Zn S片状晶体的球形聚集体 .利用核 -壳机理初步解释了空心球结构的形成过程 .

 
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