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几纳米
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  few nanometers
     And some conclusions have been gained as following: the netstructure of HF organic aerogel is even ,their pore-size are about from a few nanometers to tens of nanometers, the size of gel grains are about 30-50 nm;
     结果表明:HF气凝胶网络结构均匀,孔洞大小在几纳米到几十纳米之间,胶体颗粒大小在30-50nm;
短句来源
     Sol Gel is an important method to compose inorganic membranes, by which a porous composite ceramic membrane is produced with a pore size of a few nanometers and a narrow poredistribution.
     溶胶-凝胶法是制备无机膜的一种重要方法,利用这种方法可以合成孔径为几纳米、孔分布狭窄的多孔陶瓷复合膜。
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  “几纳米”译为未确定词的双语例句
     after 523K held 2h aging the nanosized γ′-Fe_4N plates precipitating coherently from the gray zone in the compound layer result in the hardening of the compound layer.
     经523K,2h时效后化合物层中的"灰区"析出几纳米尺度的γ′ Fe4N是化合物层硬化的原因。
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     One dimension nano - structure on the substrate alloy of Cu - Zn - Al was prepared by simple chemical method, and its length was 800nm, its diameter was around 10nm.
     以铜锌铝合金为基体,利用简单的化学方法,在基体上生长出直径为十几纳米,长度达800nm的一维Cu-Zn-Al合金纳米结构。
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     The results showed that when the NaCl concentration was lower than 0.4 mol·L -1, the higher the NaCl concentration was, the smaller the dimension of the aggregates was.
     结果表明 ,在NaCl浓度为 0~ 0 5mol·L-1时 ,随着NaCl浓度的升高 ,溶液中大的聚集体逐渐消失 ,直至基本上只存在几纳米大小的聚集体 .
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     The result shows that the as-synthesized TiO2 nanomaterial have a high production, good quality, and intact crystal property, the smallest diameter of the nano-TiO2 is about 10nm, and the largest is about 100nm, most of diameter is in the range of 50-80nm, the length up to tens of micrometer, and have a good photocatalytic properties.
     结果表明:所制备的一维TiO2纳米材料产量高、质量好,具有较完整的结晶性能,直径最小的十几纳米,直径最大的100 nm左右, 大多数的直径为50~80 nm,长度达几十微米,光催化性能优良。
     Micro-analytic results of XRD,SEM showed that TiO2 prepared in this experiments was anatase, in which was calcined at 350℃ for 1 hour the average size of TiO2 powder and that of TiO2 particles in the film was above 10 nm,distributions of granularity were narrow and particles distribute uniformly.
     XRD和SEM分析结果表明产物的晶型为锐钛矿型纳米TiO_2,其中在350℃煅烧的粉体和薄膜中晶粒平均粒径为十几纳米,粒径分布较窄,且薄膜中的粒子分布均匀。
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  相似匹配句对
     Several problems in nanoceramics preparation
     纳米陶瓷制备中的个问题
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     Tribological Properties of Some Nano-degree Materials
     纳米润滑剂的摩擦学特性
短句来源
     Nano-foam plastics
     纳米泡沫塑料
短句来源
     Nanobiotechnology:Opportunities and Challenges
     纳米生物技术
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     Several Properties of R(L) and I(L)
     R(L)和I(L)的个性质
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  few nanometers
The classical concept of density is not very applicable to particles a few nanometers in size.
      
According to XPS data, the surface layer of the passive metal a few nanometers thick includes oxide compounds of chromium and also carbides formed during the coating electrodeposition.
      
It is shown that the size of most of the particles is a few nanometers.
      
This process technology makes it possible to obtain silicon and insulator layers whose thicknesses are uniform within a few nanometers.
      
High-resolution transmission electron microscopy (HRTEM), electron microdiffraction, and X-ray diffraction were used to study hydroxyapatite specimens with particle sizes from a few nanometers to several hundreds of nanometers.
      
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The Porous silicon films producing visible photoluminescence are prepared by anodization of ptype single-crystal Si wafers in hydrofluoric acid solution. The structural characteristic of these porous silicon films are studied by X-ray diffraction technoligy and Laser Raman scattering measurement. It is shown that the quantum dimension with nanometer order size is an important structural characteristic of porous silicon films.

采用在HF溶液中阳极处理硅单晶片的方法制备了具有可见光波段发光特性的多孔硅膜。应用X光衍射技术及激光喇曼散射谱研究了发光多孔硅膜的结构特征。研究结果表明:纳米量级尺寸是多孔硅膜的一个重要特征。估计多孔硅硅柱横截面直径在几到十几纳米之间。

The occurrence of ultramicro gold in certain carlin-type gold ore has been studied with EPMA, SEM/EDX,

本文应用EPMA、SEM/EDX及TEM/EDX对某地卡林型金矿中金的赋存状态进行了全面研究;讨论了这些分析技术的特点及所采取的分析措施。这些手段的联合运用,明确地揭示了所谓“不可见金”是由几纳米至几微米一系列不同粒级构成的被包裹于黄铁矿、含砷黄铁矿、粘土等载金矿物中的超微金粒,并在粘土中首次发现粒径小于50A的自然金颗粒。这为深入研究和揭示超微金的赋存状态提供了非常有意义的证据。

This paper reports a method to meassure the thickness of LB film with transmission electron microscopy. It is effective to study the structure and molecular arrangement in LB films.

本工作介绍一种应用透射电子显微镜测定单分子膜厚度的简便方法,用这种方法可以测定出厚度在几纳米至几十纳米的单分子膜,为研究单分子膜的分子排列及其结构提供了有用的参考数据。

 
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