27Local economists have seemed into their crystal balls and witnessed something rather horrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
Yet another pleasurable, and tasty, experiment is to kind massive crystals making use of sugar. By heating sugar with water and afterwards letting this solution evaporate on sticks, you'll be able to type rock candy from sugar crystals!
These improvements involve exotic structures with programmable lattice symmetries and very well-defined crystal behaviors, responsive elements that leverage the intrinsic properties of nucleic acids to control constructions on need, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that supply insights into gentle–issue interactions. Searching ahead, we problem the Neighborhood to leverage the amazing structural Manage afforded more info by crystal engineering with DNA to synthesize lessons of purposeful supplies that push outside of what continues to be probable with Obviously taking place crystalline materials or Individuals produced by extra regular methods.
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。
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
, has a similar framework, but there are two choices for choosing the holes the atoms will occupy. The 3rd layer could be positioned around the atoms of the 1st layer, generating an alternate layer sequence A
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
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水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
颜色：无色，浅至深的紫色，浅黄、中至深黄色，浅至深褐、棕色，绿至黄绿色，浅至中粉红。
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
Crystal Lattices You can find 7 systems of crystal structures, which might be also known as lattices or Room lattices:
14For instance, we have Quartz crystal clocks and watches precise to inside a person minute a calendar year.例如，我们使用的每年误差不超过1分钟的石英水晶钟表和手表。
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。