Not known Details About Crystal
Not known Details About Crystal
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其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。
③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。
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。
养殖晶：养殖晶是指，用天然水晶做种子，然后赋予天然水晶生长的高压条件，养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长，这样的水晶成分（分子式）与天然水晶是一摸一样的，唯一有差别的是，这样的水晶磁场作用没有天然水晶强。
There are actually many different crystals depending on geometric structures, crystal growth, and substance. There may be arrangements of hexagonal carbon atoms or amethyst that makes hexagonal pyramid structures.
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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。
You will find there's identical directive about crystal glass which differentiates among complete guide crystal, guide crystal and crystal.
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：
Crystals with evident flat faces are identified as euhedral crystals, whilst These missing outlined faces are called anhedral crystals. Crystals consisting of requested arrays of atoms that are not constantly periodic are called quasicrystals.
Through the Cambridge English Corpus We say the chain topology while in the superior w area acts as the proverbial ' scratch-on-theglass ' wanted during the natural and organic chemistry laboratory to help make crystals. From the Cambridge English Corpus Constant-tension and temperature molecular-dynamics simulations of crystals of your lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. With the Cambridge English Corpus As well as these, dust particles have been observed in small-temperature plasmas, like People Utilized in plasma processing and plasma crystals. Through the Cambridge English Corpus The ultimate A part of the reserve focuses on peculiarities of strongly coupled dusty plasmas, like the development of dust crystals and affiliated desirable forces. From the Cambridge English Corpus Finish characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. With the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Most important morphologies were not noticed. In the Cambridge English Corpus See all samples of crystal These examples are from corpora and from sources on the internet. Any thoughts during the illustrations never represent the feeling in the Cambridge Dictionary editors or of Cambridge College Push or its licensors.
Crystals are not just renowned for their Bodily visual appeal, but unique crystals of various products and formations can result in an enormous range of uses and Actual physical Homes.
The construction with the sodium atoms on your own, or even the chlorine atoms alone, is fcc and defines the device cell. The sodium chloride construction Therefore is manufactured up of two interpenetrating fcc lattices. The cesium chloride lattice (Figure 3A) is based over the bcc framework; each and every other atom is cesium or chlorine. In this instance, the device cell is a dice. The 3rd critical composition for AB
Fig. 5: The chance to recognize described crystal practices is depending on here the symmetry engineering technique.