晶石

The results show that the glass-ceramics with fibroid structure is produced after definite heat treatment, the main crystallization phase is hedenbergite and anorthite is the minor crystallization phase. The optimal process of heat treatment shows as follows: the nucleation temperature is 850 ℃ and hold time is 100 min, and the crystallization temperature is 980 ℃ and hold time is 80 min. With increasing heat treatment temperature, the FT-IR absorption bands appear obvious split, the aluminum-oxide polyhedron in the glass network changes from [AlO4] to [AlO6]. The titanium ion in the glass network gradually transforms to the 6-coordinated, moreover forms minicrystal of MgTi2O5 and Fe2TiO4 which provides the position of heterogeneous nucleation for the growth of crystal.

结果表明：在一定的热处理条件下可以以基础玻璃制备出主晶相为钙铁透辉石，次晶相为钙长石的纤维状结构的微晶玻璃；最佳的热处理工艺为：850 ℃核化100 min，980 ℃晶化80 min；随着热处理温度的升高，红外吸收带发生明显的分裂；玻璃结构中的[AlO4]向[AlO6]转化；网络结构中的钛离子逐渐转变为六配位，形成微晶相——钛酸镁和钛铁晶石，为晶体的生长提供非均匀形核位置。

Cobalt colored blue spinel once existed only as synthetic type, but recently natural type is discovered.

曾经认为，钴至色的蓝色尖晶石只有合成才有，但最近发现了天然的蓝色尖晶石。

The whole sintering process of SHS converter fettling materials can be divided into three steps. The first step is the decomposition reaction of carbonates and sodium nitrate, which is an endothermic reaction. The second step is the SHS reaction, i. e. thermite reaction, the metal of Al reacts with CO〓, O〓, NO〓, Fe〓O〓 to form Al〓O〓. The speed of thermite reaction is very quick, and accompanied with large amount of heat emission and temperature rise. The third step is the reaction of spinels formation. The Al〓O〓 produced by SHS reacts with MgO to form spinels.

整个SHS补炉料的烧结过程分三步进行：第一步为碳酸盐、硝酸钠的分解反应，属于吸热反应；第二步为SHS反应即铝热反应，金属铝粉与CO〓、O〓、NO〓、Fe〓O〓等反应生成Al〓O〓，反应速度很快，并伴随有巨大的放热和温度升高；第三步为合成尖晶石的反应，SHS反应产物Al〓O〓与MgO反应生成尖晶石。

Affordable gemstones include amethyst, citrine, spinel, many colours of garnet, blue topaz, chrome diopside, fire opal, white opal, iolite, kuzite, peridot, coral, turquoise, lapis lazuli, chalcedony, and freshwater and saltwater cultured pearls.

包括紫晶宝石得起、柠檬黄、尖晶石、石榴石多种颜色，蓝黄玉、铬透辉石、火欧泊、白欧泊、iolite、kuzite、橄榄石、珊瑚、绿松石、蜜腊、玉髓、淡水及咸水养殖珍珠。

The main content of this thesis includes: studies on the preparation, surface-modification mechanism and electrochemical performance improvement of spinel LiMn〓O〓; Preparation and properties of 5V cathode materials 〓; Physical properties and electrochemical performance studies on layered 〓 for lithium ion batteries.

本论文的主要研究内容包括：正尖晶石LiMn〓O〓的制备、表面修饰改性机理以及电化学性能的改善；具有正尖晶石结构的5伏正极材料〓的合成与性能探索；具有层状结构的镍锰基化合物〓的物理性质与其作为锂离子电池正极材料的电化学性能以及该材料的产业化探索。

This is our top spinel quality, made from burnt high-grade magnesia and prefabricated spinel.

这是我们的顶级尖晶石产品，由高等级的镁砂和预制的镁铝尖晶石烧结而成。

Liaoning Cando Microcrystal Glass Co., Ltd. is a high new technique enterprises together with development and production of Micorc rystal Glass.

辽宁晶德微晶玉石有限公司是一家集微晶石技术研发和产品生产为一体的高新技术企业，采用清华大学的专利技术，生产晶德微晶玉石系列产品。

This paper introduces the latest progress of some studies of mineralogical features of spinels.

尖晶石的其它应用，如尖晶石轴承及颜料等也取得了较大的发展。

Our main product include cubic zirconia, synthetic ruby, synthetic sapphire, synthetic spinel, glass diamond, glass, jewel bearings, etc. At the same time, we produce and process natural gems like peridot, garnet, white topaz, rock crystal, amethyst, citrine, coral, tourmaline, etc.

主要生产加工蓝宝石、红宝石、石榴石、白黄玉、紫晶、黄晶、茶晶、电气石、橄榄石、蓝宝石、红宝石、珊瑚等天然宝石；同时，还生产加工立方氧化锆、红刚玉、蓝刚玉、尖晶石、玻璃水钻、及稀土玻璃等人造宝石产品。

Compared with ordinary quartz, owing to nanoscale alumina crystallite, the artificial stone made of TISM nanoscale microcrystallite quartz can stand higher temperature (as high as 800℃ instantly), become harder (reaching 6 according to mohs hardness scale), and enjoy better plasticity because of nano alumina crystallite's good mouldability.

帝斯曼TISM纳米微晶石英石同普通石英石相比，由於增添了纳米氧化铝微晶粒子，整体板材更耐高温（暂态耐温度可达到800摄氏度以上），硬度更大（莫氏硬度达到6以上），同时结合纳米氧化铝微晶粒子在抗拉伸疲劳中出现可塑性形变的特点，所以整体板材相对于普通石英石韧性更好、可塑性更高，更不易开裂。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。