钛

Apertured TiO2 microtubes have been fabricated by simple hydrolysis of titanium tetrachloride using ammonia in the presence of glacial acetic acid.

在冰乙酸存在条件下，以四氯化钛水解法制备了具有锐钛矿晶型结构的二氧化钛多孔微管，并用化学沉积法对其进行修饰，得到银修饰的二氧化钛多孔微管。

The morphology and microstructure characteristics of the apertured silver doped TiO2 microtubes were characterized by means of the X-ray powder diffraction, thermal analysis, transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy and N2 absorption.

氮吸附的结果显示该样品具有很高的比表面积，银的修饰没有显著影响二氧化钛微管的孔结构； XRD的表征结果显示，银修饰的二氧化钛多孔微管具有良好的锐钛矿晶型； XPS的分析结果表明银以游离的金属态存在； TEM的观测结果显示，银团簇沉积于二氧化钛纳米晶粒的表面。

Among them, 30 patients were in the iliac grafting group, and 40 patients were in the plate-screw fixation group (Codman in 11 cases, Orion in 17 cases and Caspar in 12 cases).

其中单纯植骨组30例，植骨加钛板内固定组40例（Codman钛板11例，Orion钛板17例，Caspar钛板，12例）。

The following aspects were analyzed and compared: average day in hospital, operative time, modal insertive time, titanium screw amount, approving scale on shaping and complications after operation.

结果：三维成像无模多点钛网组与传统钛网组比较：手术操作时间缩短（P.05）；平均钛网植入时间缩短（P.05）；钛钉使用量减少（P.05）；对塑形后外观满意度上升（P.05）。

The precursor of sodium titanate nanotubes is prepared by: reacting titanium dioxide, metatitanic acid or titanate ester in 20-80 wt.% NaOH aqueous solution at 100-140 deg.C for 12-72 h, washing with water, filtering and drying.

用于反应的前驱体纳米管钛酸钠由二氧化钛、偏钛酸或钛酸酯与20-80wt％NaOH水溶液在100-140℃反应12-72h后用水洗去NaOH，过滤、干燥制成。

But ferrous sulfate the by-product of TiO2 cannot be effectively used enough in our country over a long period. In order to solve above questions, the dissertation has done some works as follows:Firstly, the process of purifying by-product of TiO2-ferrous sulfate is studied. The craft and condition of the synthesis of micaceous iron oxide with by-product of TiO2-ferrous sulfate was studied through experiments.

它们都可以通过钛白副产硫酸亚铁为原料制备，但是长期以来，我国硫酸法生产钛白的副产物硫酸亚铁得不到充分有效地利用，针对以上情况，本论文主要作了以下几个方面的工作：首先，研究了钛白副产硫酸亚铁的净化工艺路线，讨论了钛白副产硫酸亚铁水热法合成云母氧化铁的工艺路线和条件，讨论了影响云母氧化铁生成的因素，得出了红、棕、灰云母氧化铁合成的控制条件。

H+2 ions were implanted into ilmenite at room temperature,and the microreaction mechanism during the reduction of ilmenite was investigated by transmission electron microscopy.

实验发现，注入H2+离子后，[1-10]方向的金属铁晶体在[1-43-1]方向的钛铁矿晶体上生成；在钛铁矿还原过程中，金属铁的(2-2-2-)或(222)晶面优先由钛铁矿的(426-4-)和(4-2-64)晶面转变而来，钛铁矿还原到铁的结构变化是一个渐变过程

While in photoreduction of Cr , the titania-modified MCM-41 photocatalysts were more photoactive than the titania-silica composite (25％ TiO〓).

在光催化降解苯酚中氧化钛修饰MCM-41的光催化活性虽然不及结晶的锐钛矿相纳米氧化钛，但是仍具有较高的催化活性；在光催化还原Cr到Cr反应中氧化钛修饰MCM-41的光催化还原性明显高于部分结晶的TiO〓-SiO〓（25wt％TiO〓）复合氧化物。

There exists the optimum technical parameters about the effects of hydrolysis conditions. When the concentration of H+is 2.6 2.8 mol/L, the concentration of TiOSO4 is 25 28 g/L, the time of hydrolyzation is 60 min and the temperature of hydrolyzation is 125℃respectively, the yield of TiOSO4reaches 95%, the particle size of H3TiO3 is less than 40 nm, and the powder of H3TiO3 is spheral.

研究结果表明：水解条件直接影响偏钛酸的粒径及其分布，其中，钛液酸度的影响最大；水解条件对TiOSO4水解率和偏钛酸粒径的影响存在着最佳结合点，即当c为2.6~2.8 mol/L，ρ(TiOSO4)(按TiO2计)为25~28 g/L，水解时间为60 min，水解温度为125℃时， TiOSO4的水解率可达95%以上，得到的偏钛酸呈球形且粒径为40 nm。

There exists the optimum technical parameters about the effects of hydrolysis conditions. When the concentration of H(superscript +) is 2.6~2.8 mol/L, the concentration of TiOSO4 is 25~28g/L, the time of hydrolyzation is 60 min and the temperature of hydrolyzation is 125℃ respectively, the yield of TiOSO4 reaches 95%, the particle size of H3TiO3 is less than 40nm, and the powder of H3TiO3 is spheral.

研究结果表明：水解条件直接影响偏钛酸的粒径及其分布，其中，钛液酸度的影响最大；水解条件对TiOSO4水解率和偏钛酸粒径的影响存在着最佳结合点，即当cH(上标+为2.6~2.8mo1/L，ρ(TiOSO4)（按TiO2计）为25~28g/L，水解时间为60min，水解温度为125℃时，TiOSO4的水解率可达95%以上，得到的偏钛酸呈球形且粒径为40nm。

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。