Detailed Notes on Crystal
Detailed Notes on Crystal
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诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：
A fundamental thought in crystal constructions is the device mobile. It is the smallest unit of quantity that allows identical cells to get organized collectively to occupy all readily available House. The geometrical foundation of all crystals would be the lattice. A lattice can be viewed as an everyday and infinite arrangement of points or atoms, wherever Every single level or atom has an identical bordering setting.
晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
C2 [ U ] clear glass of very high quality, typically with its surface area Slash into sensitive patterns:
Sensible Vocabulary: relevant words and phrases Glass blower blowpipe bulletproof glass Slash glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See much more results » You can even find related phrases, phrases, and synonyms inside the subjects:
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
There's a identical directive about crystal glass which differentiates amongst complete direct crystal, guide crystal and crystal.
Among the many binary crystals, the best constructions to visualise are Individuals with equal figures of The 2 sorts of atoms. The framework of sodium chloride is based with a dice. To construct the lattice, the sodium and chlorine atoms more info are put on alternate corners of a dice, along with the framework is recurring (Figure 3B).
22Working from what The united states already is familiar with about by itself, the bureau's professionals and also other demographers provide an irresistible, if clouded, crystal ball among the their visions.
15The trick to a good thermoelectric materials is often a crystal structure through which electrons can move freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
The sodium chloride crystal lattice is characterised through the close packing with the favourable sodium ions and adverse chloride ions. Just about every sodium ion is surrounded by 6 chloride ions, and each chloride ion is surrounded by 6 sodium ions, developing a remarkably steady and symmetrical structure.
水晶饰品越来越受到人们的喜爱。中国、日本、韩国、美国等国家的人们还对水晶球情有独钟，喜欢将它们摆在家里或办公室里，认为水晶球有灵性，能保平安，带来财运。不过天然水晶不像看起来那么晶莹剔透，它也有瑕疵，我们在选购饰品的时候要注意。此外，我们还要掌握水晶的评价依据、选购方法，这样可以帮助我们在琳琅满目的水晶饰品中选到心仪的水晶。
Binary crystals are present in quite a few constructions. Some pairs of factors form more than one composition. At place temperature, cadmium sulfide may possibly crystallize both while in the zinc blende or wurtzite construction. Alumina also has two probable buildings at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit unique constructions at distinctive temperatures. Among the many most intricate crystals are Individuals of silicon dioxide (SiO2), which has 7 unique structures at many temperatures and pressures; the commonest of such constructions is quartz.