5 Essential Elements For Crystal
5 Essential Elements For Crystal
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This idea applies Similarly in one, two, and three-dimensional Areas. The complete crystal lattice is often created by continuously reproducing the pattern on the device cell in all Instructions.
Bismuth (Bi) appears to get a metal, but the quantity of electrons readily available for electrical conduction is analogous to that of semiconductors. In truth, bismuth is termed a semimetal. Molecular solids usually are crystals formed from molecules or polymers. They can be insulating, semiconducting, or metallic, depending upon the type of molecules inside the crystal. New molecules are constantly becoming synthesized, and plenty of are made into crystals. The volume of different crystals is big.
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。
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
看抛光：抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。
结晶�?When sea h2o is permitted to evaporate, salt crystals are deposited. 海水蒸发后，盐的结晶体就沉淀下来。
⑩、雷射内雕：以计算机辅助激光设备在水晶对象中进行三维图案的成型，艺术效果好，可以任意表达各类图案，图形，达到逼真效果
26Some of the best consuming glasses are constructed from direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
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：
Solids which have limited-selection buy but deficiency lengthy-variety purchase are identified as amorphous. Pretty much any materials can be produced amorphous by swift solidification from your soften (molten point out). This ailment is unstable, and the stable will here crystallize in time. In case the timescale for crystallization is many years, then the amorphous point out seems steady.
地质学家目前为止对晶洞形成还没有广泛认同的理论，但相信晶洞可以在任何埋藏的空腔内形成。这些空腔可以是火成岩中的气泡、树根下的空穴，甚至动物挖的地洞。经过漫长时间，空腔的外壁变硬，溶解的矽酸盐或方解石沉积到内壁。再经过漫长的时间，缓慢渗入的矿物使得晶体在空腔内部结晶。
You'll find just a few diverse device-cell styles, so a variety of crystals share just one unit-mobile form. An essential characteristic of a unit cell is the volume of atoms it contains. The overall variety of atoms in the entire crystal would be the quantity in each mobile multiplied by the quantity of device cells. Copper and aluminum (Al) Each individual have just one atom for every device mobile, when zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms per device mobile, but there are several exceptions. Crystals of polymers, for instance, have 1000s of atoms in Each and every device cell.
《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”
水晶观赏石是天然水晶中最具代表的作品，具有其他宝石都不具备的观赏性。不论是玉石翡翠还是都要经过雕琢后次能体现他的价值，而水晶观赏石只需要将表面进行抛光，即展现出晶体内所包裹的物质，直接欣赏原汁原味的水晶石。