铁

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。

Fumaric acid-containing wastewater was pre-treated by a method of microelectrolysis of iron and carbon , with the reaction time, pH value, temperature and ratio of iron to carbon studied.

采用铁炭微电解法预处理富马酸废水，研究了反应时间、pH值、温度、铁与炭的比例对预处理的影响，试验结果表明：当反应时间180min，铁炭比3∶1，反应温度313K时，CODCr去除率35。

Pretreatment of wastewater from pyrimidine production by iron-carbon microelectrolysis -Fenton oxidation process;2. The per-treatment of high strength cyclohexanone wastewater by iron-carbon microelectrolysis -coagulation process was studied, and four affecting factors,i.

研究了用铁炭微电解-混凝工艺预处理高浓度环己酮废水，通过实验确定了铁炭质量比、进水pH值、水力停留时间及曝气时间4个影响因素的最佳条件分别为：铁炭质量比为1∶2，环己酮废水进水pH为2～3，停留时间为4h且有曝气条件下，COD去除率达到55。

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

Properties : White crystallization or powder , proportion 1.735 , melting point is 287 ℃, apt to dissolve in water , ethanol and propanone , aqueous solution is neutral , turn into the blood red sulphur cyaniding iron with molysite , reactionless with inferior molysite, salt function turns into dark blue sulphur cobalt cyanide, turn into white sulphur silver precipitating or black sulphur copper cyanide cyanide to precipitate with the silver salt or copper salt function with cobalt.

白色结晶或粉末，比重 1.735 ，熔点 28 7 ℃，易溶于水、乙醇和丙酮，水溶液呈中性，与铁盐生成血红色的硫氰化铁，与亚铁盐则无反应，与钴盐作用生成深蓝色的硫氰化钴，与银盐或铜盐作用生成白色的硫氰化银沉淀或黑色的硫氰化铜沉淀。

Dielectric, piezoelectric and electrmechanical coupling properties of PZT and PSZT systems at high Zr content region were studied. The feature of high Kt and low Kp of PZT-based materials near F-AF phase boundary was exploited and examined, and electromachanical coupling anisotropy Kt/Kp is higher than that at the morphotropic phase boundary , Kt≥0.40, Kt/Kp≥3. 0. This phenomenon can be realized by electric field -induced AF-F phase transition and explained by coupling effect of two-sublattice in antiferroelectric unit cell.

研究了PZT和PSZT两个系统在高锆区的介电、压电和机电耦合等性能，首次发现了PZT基材料在铁电-反铁电相界处具有高Kt和低Kp的性质，机电耦合各向异性Kt/Kp也比准同型相界要高，Kt≥0.40，Kt/Kp≥3.0，并把这一现象归因于电场诱导AF-F相变和反铁电双子晶格间的强耦合作用。

Aiming at two key issues in the molecular design of high-spin moleculesand organic ferromagnets, i.e., the ferromagnetic coupling strength in localradical fragments and the changeover of coupling capabilities offerromagnetic coupling units in building high-spin molecules, we made anextensive and deep investigation on numerous important conjugated radicalsystems within the semiempirical and nonempirical VB model, respectively.

针对高自旋分子和有机铁磁体的分子设计中的两个重要问题，即自由基片断的铁磁偶合强度及铁磁偶合单元在&建造&高自旋分子时其偶合能力的变化，分别用半经验的和非经验的VB模型，以一些重要的共轭自由基体系为对象进行了广泛而深入的研究。

The purpose of this study was to examine whether maternal iron and/or folate status influences human milk folate secretion and is responsible for growth faltering of Otomi infants in Capulhuac, Mexico. Breast-feeding mothers (n = 71) were randomized at 22 +/- 13 d postpartum to receive a daily multivitamin supplement containing folic acid (400 microg) with and without iron (18 mg).

本研究检测墨西哥Capulhuac市经剖宫产母亲体内铁和/或叶酸水平是否影响乳汁中叶酸盐分泌，并探究是否与剖宫产婴儿生长缓慢有关。71例，平均产后22+/-13天，均母乳喂养，每日补充多种维生素包括叶酸(400mg/d)，按是否补铁随机分为两组，补铁组(18mg/d)。

The purpose of this study was to examine whether maternal iron and/or folate status influences human milk folate secretion and is responsible for growth faltering of Otomi infants in Capulhuac, Mexico. Breast-feeding mothers (n = 71) were randomized at 22 +/- 13 d postpartum to receie a daily multiitamin supplement containing folic acid (400 microg) with and without iron (18 mg).

本研究检测墨西哥Capulhuac市经剖宫产母亲体内铁和/或叶酸水平是否影响乳汁中叶酸盐分泌，并探究是否与剖宫产婴儿生长缓慢有关。71例，平均产后22+/-13天，均母乳喂养，每日补充多种维生素包括叶酸(400mg/d)，按是否补铁随机分为两组，补铁组(18mg/d)。

Ferritic irons have a considerably steeper permeability curve than pearlitic irons .

铁素体铁杆有一个相当陡峭的渗透率曲线比珠光体铁杆。

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。