微晶的

Diopside crystals in fluosilicate glass-ceramics tend to lower thermal expansion coefficient, while richterite crystals in fluosilicate glass-ceramics tend to increase thermal expansion coefficient.The lowest thermal edpansion coefficient of K2O-MgO-SiO2-CaF2 fluosilicate glass-ceramics is 78.4×10-7(20-300℃), while the highest thermal expansion coefficient of this glass-ceramics is 85.6×

透辉石结晶相的含量增加使微晶玻璃的热膨胀系数降低，与此相反碱镁闪石结晶相的含量增加却使微晶玻璃的膨胀系数增加。K2O－MgO－SiO2－CaF2系统氟硅酸盐微晶玻璃的最小热膨胀系数为：78.4×10－7（20～300℃）；最大热膨胀系数为：85.6×10-7（20～300℃）。

The crystallization form of porous glass-ceramics belong to volume crystallization; the parawollastonite which was the main phase was monocline chain structure ZM type wollastonite, with long needle crystal or short rodlike crytal.

为了研究多孔微晶玻璃的保温性能，根据伟晶岩多孔微晶玻璃的内部组成以及孔隙率情况，作者提出了三种热传导的理想等效物理模型，推导出了数学公式，验证了多孔微晶玻璃的导热系数。

The measurement of 1/f noise in amorphous, microcrystalline and polymorphous silicon film was performanced with a self-design semiconductor system.

研究不同厚度的非晶、微晶和多形硅三种氢化硅薄膜的热导率结果表明微晶硅薄膜的晶化增大了薄膜的热导率。

It is found that there is a mineral association, micro-crystal muscovite and phengite, in this deposit. The mineral assemblage contains about 80% micro-crystal muscovite and about 20% phengite. Their crystallinity is very high and their polytype is 2M1. Both of them are dioctahedral because the d and b of micro-crystal muscovite and phengite are 0.1502 nm, 0.9012 nm and 0.1505 nm, 0.9030 nm, respectively. For their d and b are larger than those of common muscovite, the reason why Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+) are high in the ore is that Al(superscript 3+) in the octahedron is replaced by Fe(superscript 2+)+Fe(superscript 3+) and Mg(superscript 2+), and this is a phengite series mineral association formed through isomorphic replacement.

该矿物组合中的微晶白云母和多硅白云母结晶度高，多型为2M1，其含量分别为80%和20%左右；二者都属二八面体型白云母类矿物，但d060和b值偏大，微晶白云母的d060=0.1502nm，b=0.9012nm，多硅白云母的d060=0.1505nm，b=0.9030nm；微晶白云母矿铝含量较低、铁镁含量较高，其原因是白云母晶体铝氧八面体中的Al离子被Fe、Mg等离子所取代，这一矿物组合是通过矿物类质同象作用所形成一种多硅白云母系列矿物。

The authors have summarized relevant data studied by overseas scientists and suggested the definition of chalky texture formation as "Chalky texture formation refers to that magnesium calcite and aragonite are transformed into the framework of micrite and microspar of low-magnesium calcite via neomorphism, and result in and maintain intercrystalline pore and throat networks in it; enhanced chalky texture formation refers to that the micrite and microspar are successively subjected to dissolution and leaching, so that the secondary network of solution voids is formed".

综合各国学者的有关研究资料，建议将白垩状结构化定义为：&碳酸盐沉积物和碳酸盐岩中的镁方解石和文石在不同成岩阶段通过新生变形而转变成低镁方解石微晶和微亮晶格架，并在其中产生和保存晶间孔喉网络的作用；强化白垩状结构化是指微晶和微亮晶格架受到进一步溶蚀和淋滤，从而形成次生溶蚀孔隙网络的作用&。

To enrich the outlook of glass-ceramics and improve its competitive power, an ingredients schedule with fly-ash solid residue as main raw materials, which contained fluorine after some valuable materials were obtained, was put forward based on theoretic analysis, making use of the characteristics of silicofluoride as crystal nucleating agents.

为丰富微晶玻璃外观色泽，提高产品竞争力，利用氟硅酸盐在微晶玻璃制备中可作成核剂的特性，经过理论分析确定以粉煤灰提取有价成分后的含氟固体残渣为主要原料生产镁橄榄石微晶玻璃的配料。

Basing on the the best batch and the best parameters of heat treatment,we mainly investigates the quotiety and quality of deoxidized iron during the course of parent glass preparing according to the characteristic of batch; meanwhile, we discussed the effects of different kinds and contents alkali metal oxid on the glass-ceramic properties,and technics parameters of prepareing the glass-ceramic composite tube by centrifugal molding are also researched originally.

在获得镍渣—粉煤灰微晶玻璃的最佳配比以及最佳热处理制度的基础上，根据配料特点对玻璃熔制过程中铁的还原效果及还原质量进行了分析研究；着重探讨了不同类型、不同含量的碱金属氧化物对微晶玻璃性能的影响；同时也对微晶玻璃复合管的离心制备工艺进行了初步研究。

Compared with the ordinary Na2O-CaO-SiO2 glass, the relationship of the glass ceramic composition and the meltingtemperature with the corrosion degree of the various refractories is discussed in detail. The microstructure and characteristics of each kind of refractorys matrice and keacting layer are analysized and a great amount of optical microphotographs are obtained, which may provide reliable theory basis to manufacture the glass ceramic.

本文运用多种有效的材料测试手段，对比Na_2O-CaO-SiO_2普通玻璃深入研究了CAS系统微晶玻璃溶液对不同池壁耐火材料的侵蚀机理，探讨了CAS系统微晶玻璃组分、熔制温度和耐火材料受侵蚀程度之间的相互规律，同时详细分析、评价了每种耐火材料基体和界面反应层的显微结构及其变化特征，为CAS系统微晶玻璃生产厂家选择合适的耐火材料及熔化工艺制度提供了可靠的理论依据。

In this research,by way of the static state erosion experiment,and many kind material test means,three kinds of refractory erosions condition and the changes of CAS glass ceramic structure and performance have been discussed in detail. This paper has gained the full accurate data of large numbers,and has found out the influence level and law of different kind refractory and different erosions measuring to glass ceramic structure and performance.

本研究通过进行耐火材料在CAS微晶玻璃中的的静态侵蚀实验，运用多种有效的材料测试手段，深入研究了粘土、白泡石、锆刚玉等三种常用耐火材料的侵蚀状况及CAS系统微晶玻璃结构及性能产生的变化，获得了大量详实的数据，探讨了不同种类耐火材料、不同侵蚀量对微晶玻璃结构及性能影响的程度和规律。

The fine-beam diffraction of ferroelastic twins has been studied in detailfor the first time,and we have demonstrated the spot splitting of the a-typeferroelastic twin of NdP5O14 in its Laue pattern.With the help of computersimulation,the twin symmetry and structures were determined from the char-acteristics of the spot splitting.

在同步辐射微衍射中，我们首次在NPP a-型孪晶界的微衍射Laue图中发现Laue斑点分裂现象，结合NPP的自发应变，借助于计算机模拟，我们确定了这种挛晶的对称性与结构，并发展了一套利用同步辐射微衍射研究晶体中取向孪晶对称性的方法。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。