The Basic Principles Of Crystal
The Basic Principles Of Crystal
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A reliable is crystalline if it's extensive-assortment get. When the positions of an atom and its neighbours are recognized at 1 stage, the position of every atom is thought specifically through the entire crystal. Most liquids lack extensive-variety buy, While numerous have shorter-array order. Limited variety is defined as the primary- or 2nd-closest neighbours of the atom. In lots of liquids the first-neighbour atoms are organized in the same construction as within the corresponding stable phase.
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
发晶的价值取决于发的颜色、罕见性及大小，一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态，便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值，通过它们可了解几百万年前地球上水的成分及变化。
In order to see how crystals are shaped, you can do a little task within your incredibly very own kitchen area and see the development in the crystals happen with all your very own eyes . This may be accomplished by putting a little level of desk salt into some standard tap h2o, wait 24 hrs, and you will see wonderful cubed formations. This comes about since the water is evaporating, which brings about the atoms that make up the salt (the mineral) as well as drinking water to come closer jointly.
这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
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Ionic Crystals: Electrostatic forces sort ionic bonds. A basic example can be a halite or salt crystal.
24I intend to make my meaning crystal distinct.我想把我的意思解释得清清楚楚。《牛津词典》
The definition of a good appears apparent; a sound is usually considered being really hard and agency. On inspection, even so, the definition turns into fewer simple. A cube of butter, such as, is tough immediately after becoming stored inside of a refrigerator and is also Obviously a strong. Immediately after remaining within the kitchen counter for daily, precisely the same dice will become very soft, and it's unclear In the event the butter must nevertheless be viewed as a sound.
From your Cambridge English Corpus We say the chain topology while in the superior w location functions as the proverbial ' scratch-on-theglass ' necessary while in the organic and natural chemistry laboratory for making crystals. In the Cambridge English Corpus Constant-pressure and temperature molecular-dynamics simulations of crystals of the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From the Cambridge English Corpus In combination with these, dust particles have been noticed in very low-temperature plasmas, like All those used in plasma processing and plasma crystals. From the Cambridge English Corpus The final Section of the book focuses on peculiarities of strongly coupled click here dusty plasmas, such as the formation of dust crystals and associated beautiful forces. In the Cambridge English Corpus Complete characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From your Cambridge English Corpus Unbroken crystals are euhedral; rounded, or maybe more irregular, Principal morphologies weren't noticed. In the Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from resources on the web. Any views during the examples will not represent the impression on the Cambridge Dictionary editors or of Cambridge University Push or its licensors.
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（expansion lines）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
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。
One more kind of crystalline carbon is predicated on a molecule with sixty carbon atoms termed buckminsterfullerene (C60). The molecular shape is spherical. Every carbon is bonded to 3 neighbours, as in graphite, as well as the spherical form is realized by a combination of twelve rings with 5 sides and twenty rings with 6 sides. Comparable structures were being to start with visualized through the American architect R. Buckminster Fuller for geodesic domes.