About Crystal
About Crystal
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轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
12He tried out once more in numerous other cities and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。
Chemical Bonds The types of chemical bonds shaped involving atoms or teams of atoms in crystals rely upon their size and electronegativity. You'll find four classes of crystals as grouped by their bonding:
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。
. These four structures comprise the majority of the binary crystals with equivalent numbers of cations and anions.
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The elements are found in a variety of crystal packing arrangements. The most common lattice buildings for metals are Individuals obtained by stacking the atomic spheres into one of the most compact arrangement.
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：
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
The basic units of solids are possibly atoms or atoms that have merged into molecules. The electrons of the atom shift in orbits that kind a shell construction across the nucleus. The shells are crammed in a scientific get, with Just about every shell accommodating only a small quantity of electrons. Distinctive atoms have diverse quantities of electrons, which can be distributed inside a Crystal attribute Digital framework of loaded and partially loaded shells.
国家还并未给天然水晶提供一个等级划分的具体标准，水晶品种繁杂，每一品种都有他不同的评判标准。
14For instance, We've got Quartz crystal clocks and watches precise to in just a single minute a year.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。
21You all know the way if you have a crystal prism and pass a beam of daylight as a result of it, you receive a spectrum, which looks like a steady band of rainbow hues.