The Basic Principles Of Crystal
The Basic Principles Of Crystal
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Not all crystals are Similarly crystalline. There in many cases are impurities, as well as ionic & covalent involving molecules can generate vastly diverse structures away from exactly the same substance. A terrific illustration of this are diamonds and graphene.
A elementary strategy in crystal structures could be the device mobile. It is the smallest unit of volume that allows similar cells being arranged alongside one another to occupy all accessible Room. The geometrical foundation of all crystals would be the lattice. A lattice is often viewed as a regular and infinite arrangement of factors or atoms, the place Just about every stage or atom has an identical encompassing ecosystem.
A crystal composition focuses on how the atoms are arranged In the crystal. On the other hand, crystallographers are interested in the general shape and sizing with the crystal and also its external features. To perform this, they have to find out about the crystal technique.
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
25If you are a Billy Crystal supporter, you can love this film.如果你是比利·克里斯特尔的影迷，你就会喜欢这部电影。《柯林斯英汉双解大词典》
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Crystals search exclusive from all kinds of other rocks and minerals, but �?barring several Exclusive situations �?nearly all minerals hide a crystalline construction underneath the surface area.
发晶：无色、浅黄、浅褐等，可因含金红石常呈金黄、褐红等色，含电气石常呈灰黑色；含阳起石而呈灰绿色。
水晶包裹体丰富多彩，从气体、液体到各种矿物质，甚至宝石，均可被包含于水晶内，各种包裹体所形成的景象更是变化万千。按照包裹体的内容，常把包裹体水晶分为一下八类：
22Working from what The usa previously is aware about itself, the bureau's industry experts and also other demographers offer an irresistible, if clouded, crystal ball among the their visions.
All crystal ball crystal very clear copyright liquid crystal crystal lattice crystal structure liquid crystal Exhibit See all meanings Idioms and phrases crystal distinct idiom
The sodium chloride crystal lattice is characterized with the shut packing in the optimistic sodium ions and unfavorable chloride ions. Each sodium ion is surrounded by 6 chloride ions, and every chloride ion is surrounded by six sodium ions, creating a really secure and symmetrical framework.
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
crystal Alteration is variable: absent in many crystals, in Other folks manufacturing dense sericite aggregates which can display some recrystallization results to create coarser-grained white mica. From your Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are sometimes arranged in aggregates. In the Cambridge English Corpus Moreover, haloarchaeal cells have been embedded inside of salt crystals less than laboratory circumstances and subsequently analysed by light-weight microscopy. With the Cambridge English Corpus The white clouds (commonly sparse) had been also commonly considered getting made up of very small crystals of h2o ice, click here relatively like cirrus within our ambiance. From your Cambridge English Corpus They are found in evaporite salt lakes and might be trapped in salt crystals throughout evaporation. From your Cambridge English Corpus For that reason, the cells (organelles and membranes) are destroyed mechanically by ice crystals, bringing about Loss of life by mobile lysis. Within the Cambridge English Corpus The crystals were being Utilized in the first or next orders of reflection. Within the Cambridge English Corpus Within our 8xperiments, the crystals were cubes which has a base space of 8 e mm. From your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : outcome of temperature and force.