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At present,the rate laws and reaction mechanisms of pyrite oxidation,pyrite and chalcopyrite formation,uraninite and magnetite dissolution in aqueous solutions are mainly studied,and it is discovered that (1)oxidation rate of pyrite controlled by surface reaction assume fractional dependence on Fe3+ and O2 molalities in acid solutions;(2)Pyrite cannot nucleate directly from solutions below 300 ℃,it can only form initially through sulfidation of a FeS precursor. The rate equation of reaction between FeS and H2S to form pyrite is of the second order;(3)Chalcopyrite is formed by reactions of pyrrhotite or pyrite with Cu2+,the former proceeds via a series of mediate metastable phases of Cu-Fe sulfide,whereas the rate equation of the latter is apparently of the first order which is controlled by surface reaction;(4)The nonlinear behavior of magnetite dissolution at acid pH can be represented by a shrinking core model coupling with surface reaction and diffusion transport.

目前主要研究了水溶液中黄铁矿氧化、黄铁矿和黄铜矿形成、晶质铀矿和磁铁矿溶解的速率定律和反应机理，发现：(1)酸性溶液中黄铁矿的氧化速率对Fe3+和O2浓度呈分数依赖并受表面反应的控制；(2)低于300 ℃时黄铁矿不能从溶液中直接成核，而需初始地通过FeS先驱物的硫化生成，FeS与H2S反应形成黄铁矿的速率方程为二级；(3)磁黄铁矿或黄铁矿与Cu2+反应均可形成黄铜矿，前者经历了一系列准稳的Cu-Fe硫化物的中间物，后者的速率方程为表观一级并受表面反应的控制；(4)酸性pH时磁铁矿的非线性溶解行为可采用表面反应扩散输运耦合的收缩核模型来描述。

The principal form of exclusion is bureaucratic authority and the form of usurpation is the exclusionary usurpation.

六、教师证照的首要排外策略为行政权威，而侵占形式是含括式

Ice is the soild form of water and vapour is water in the form of a gas .

冰是水的固体形式，而水蒸汽是气体形式的水。

They are non-clinging in habit with the stems, depending on a variety, between 40 to 200 cm long,but will meander through a border and amongst existing plants in a delightful manner, adding interest to shrubs that have finished flowering (e.g. azaleas that flower beautifully but shortly in early spring, and afterwards they form a monotonous mass of green until the autumn when its leaves variegate), or providing a contrast of color and form.

他们不依附自己的树干，而是以优美的形态缠绕在已有的植株上，以一种讨人喜欢的配植方式增加已经停止开花的灌木的观赏价值（例如，azaleas开花是十分美丽但是只在早春开花，而且花期很短，然后以大片单调的绿色存在直到秋天树叶凋谢），以与被依附植株形成对比的颜色和形态存在。

Based on the decomposition theorem for vector space with module structure and rational canonical form of matrix, a kind of new block diagonal controllably canonical forms are inferred when the time invariant linear multivariable system is completely controllable, which the system matrix is similar to a block diagonal and has an analogy with its rational canonical form. Compare with current controllability canonical forms, this kind is easier to analyse the system constructional characteristic. The process of proof gives an effective solution method.

基于向量空间的模结构分解和矩阵的有理标准形给出了定常多输入线性系统一类新的块对角可控规范型，其中的系统矩阵相似与一个块对角矩阵，该块对角矩阵类似于矩阵的有理标准形，与现在有的可控规范型比较，更容易反映系统的结构特征，证明步骤给出了求解方法。

According to previous studies, false veins can roughly divide into two major types:(1) recurrent vein: form by fusion of leaflets, for instance, false veins of Angiopteris;(2) false veinlet: form by reduced veinlets, for instance, false veins of Hymenophyllaceae.

从过去的研究中，大致可将假脉分为两大类型(1)回脉：由相邻小羽片之边缘互相愈合而成，例如观音座莲属之假脉；(2)假支脉：由支脉退化而成，例如膜蕨科之假脉。

The content of kaolinite varies in the range of 80%to 95%.Two occurrences of kaolinite are rev ealed:one is in the form of aggregate of vermiform crystals;another is in the form of cryptocrystalline or colloidal materials.Its crystallization index is calculated to be 0.54～0.74a nd 0.47～0.53,indicating its higher degree o f order.Chemical analyses show that the compositions of kaolinite are close to its theoretical values.

光学及扫描电子显微镜、 X射线衍射分析和红外分析等系统性研究的结果表明，高岭石主要有两种存在形式，一种呈蠕虫状集晶，另一种是隐晶质或胶状高岭石，测得其结晶指数分别为 0.54～ 0.74和 0.47～ 0.53，说明其有序度偏高；化学分析结果表明，其化学成分接近于高岭石的理论值， Al2O3含量达 35%～ 37%， SiO2含量为 47%～ 48%，碱金属、碱土金属及其他氧化物含量很低。

In terms of poetic form , Tagore attaches great importance to the versification of poetry in his early years , but in his later period , he has more profound understanding of poetic form .

在文体论方面，他早期比较重视诗的格律形式，后期对韵律问题有了更深刻的认识，认为韵律不仅是诗歌的一种形式因素，而且是艺术家手中的创造力。

Having the form of a canon.Having the form of a vesicle.

小囊状的，小包状的具有囊的形状的

This article describes a brand - new method as viscometry to study the principle and method of water treatment coagulant polyaluminum chloride form existing in the aqueous solution gets the character value of hydrated ion group : A2 , thereby lays foundation for understanding the form of polyaluminum chloride in the aqueous solution provides the directive information for developing efficient new kind of high effective coagulant .

介绍了一种全新的方法--粘度法研究水处理混凝剂在水溶液中的形态的原理和方法，求得水化离子团特征值A_(2)，从而为进一步摸清聚合氯化铝在水溶液中的形态奠定了基础，为开发新型高效混凝剂提供有指导意义的信息。

They go to town. Would you just ask them?

他们在城里你能问他们吗？

Ossein pretreated for a2 weeks period exhibited the maximum% yield incase of bone gelatin, while the yield from intact skin was higher than that realized incase of de-scaled skin.

预处理时间达2星期的骨胶原表现出最高的骨明胶百分产量，然而从未处理鱼皮中得到的产率比去鳞的鱼皮得到的要高。