查询词典 surface area

The results show that the La doping inhibited the phase transformation from anatase to rutile, and improved the optical absorption and surface area of catalysts, also could effectively enhanced the photoactivity.

本论文主要研究了在水热法的基础上进行改进，通过不需要高温煅烧的路线制备了镧离子掺杂TiO_2光催化剂，并通过XRD、UV-Vis、IR、BET等表征手段详细考察了制备条件对催化剂的结构和活性的影响。

The results showed that catalyst prepared at 160℃ and pH=1 has the best photocatalytic activity, which is related to its small size and large surface area.

结果表明，在160℃、pH=1条件下制备的催化剂的活性最佳，这与其具有小的粒径、大的比表面积等因素有关。

X-ray diffraction,transmission electron microscopy, BET surface area measurement and thermal analysishave been used to determine the characteristics of the nanopowdered silver prepared by chemical reduction with the polymolecular protectant.

用X -射线衍射、透射电镜、比表面测定和热分析技术，对从高分子保护化学还原法制得的纳米Ag粉，做了相关的测定表征；从表观比热的测定结果探讨这一亚稳微晶体系在加热过程和热处理后所发生的各种变化。

Effect of grinding aids on grinding efficiency of Portland cement,slag cement and pozzuolana cement was evualated by adopting indexes such as residue of sieve,specific surface area and size distribution.Some references were provided for the selection of grinding aids by comparision test and results analysis.

选取了立窑和回转窑2种熟料，在同一试验条件下掺入不同种类及掺量混合材磨制成若干个试样，并采用筛余、比表面积及粒度分布等指标来评价助磨剂对普通硅酸盐水泥、矿渣水泥和火山灰水泥粉磨效率的影响，并进行了对比研究，通过作用效果的分析，为助磨剂的选用提供了参考依据。

The preinstallation analysis should also take into account the surface area of the ion-exchange resin beds, the temperature range of the system water, the operational range of the flow rates, the frequency of use of the system, the type of regenerant chemicals, and the proposed method of steam sterilization or sanitization.

预安装的分析仪器仪表同样也考虑离子交换树脂床的表面积，系统水温范围，流量操作范围，系统使用频次，再生化学品的类型和建议的蒸汽灭菌或消毒方法。

English:Activated alumina is a porous solid material with high dispersion and large specific surface area, which has fine adsorption capability, fine pressureproof performance, fine wear resistant performance and fine heat-resistant performance, and as a result it is widely used as adsorbents.

产品简介：活性氧化铝是一种具有多孔性高分散度的固体物料，有很大的比表面积，既有良好的吸附性能，又有良好的耐压、耐磨损和耐热性能，因而，被广泛地用作高效吸附剂、干燥剂本品为白色，球状多孔性物质无毒、无臭、不粉化、不溶于水。

The basic structural parameters of pitch2based spherical activated carbon were characterized ,such as specific surface area by BET model , total pore volume , micropore and mesopore volume , sphericity , hardness and content of heavy metal ions . Its adsorption capacity to creatinine and vitamin B 12 , which are typical small and medium toxic molecules in blood , were measured. Hemolysis ratio , number of particles released , pyrexic source and germ count in a man2made kidney made of PSAC were checked .

表征了沥青基球状活性炭的基本结构参数(如比表面积、孔容量、球形度、强度、重金属含量等)，测定了其对血液中典型中、小毒性分子的吸附性能(肌酐和VB12 )和溶血反应率，分析了以沥青基球状活性炭为吸附剂的人工炭肾的微粒释放量、热源和细菌含量，并进行临床试验。

It has been successfully applied in the fields of high-performance carbon fiber, needle coke used for ultrahigh power electrode, anode of rechargeable lithium-ion batteries, activated carbon with super-high surface area, catalyst supports and carbon foams、 In this paper, the effects of raw materials and pyrolysis conditions including heat-treatment temperature, pressure and time on the formation and development of carbonaceous mesophase were discussed in detail Since complex constitutes of raw material, various reactions and phases are involved in the process of mesophase evolution, we suggest that a given carbonaceous mesophase product should be manufactured by selecting raw materials and setting pyrocondensation conditions according to the specific requirement of the product, so that products with the best structure and performance could be obtained.

它在高性能炭纤维、超高功率电极用针状焦、锉离子二次电池负极、超高比表面积活性炭及催化剂载体、泡沫炭等领域得到了较好的应用。综述了原料和热缩聚条件对炭质中间相形成和发展的影响，这些影响因素包括原料的种类、热缩聚温度、反应压力和保温时间等。通过讨论指出，由于炭质中间相涉及的原料种类多样，热缩聚制备过程中涉及的反应、物相复杂，因此，在制备特定性能的产品时，应针对产品的特定性能要求来选择原料、设定热缩聚条件，以制得具有最佳结构和性能的产品。

The products are porous solids with high specific surface area (83m^2/g for NaH) and pyrophoric in air. They are far more active than the commercial alkali metal hydrides.

该反应的产物是一类大比表面积(NaH的比表面积为83m^2/g)、多孔性固体粉末，在空气中可自燃。

The interfacial surfaces of the solid body electrodes have radially extending lobes that increase the interfacial surface area.

固体电极的界面表面具有径向延伸的叶瓣，增大了界面面积。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。