Facts About Crystal Revealed
Facts About Crystal Revealed
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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:
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水晶文化历史悠久,古人曾赋予它一串极富美感的雅称:水玉、水精、水碧、石英等。
Tetragonal: These crystals kind prisms and double pyramids. The composition is sort of a cubic crystal, except a person axis is lengthier than another.
C2 [ U ] clear glass of very top quality, generally with its area cut into fragile patterns:
当二氧化硅结晶完美时就是水晶;结晶不完美的就是石英:二氧化硅胶化脱水后就是玛瑙;二氧化硅含水的胶体凝固后就成为蛋白石;二氧化硅晶粒小于几微米时,就组成玉髓、燧石、次生石英岩。
Crystals glance unique from all kinds of other rocks and minerals, but �?barring several Particular cases �?nearly all minerals conceal a crystalline construction underneath the floor.
The weather are observed in many different crystal packing preparations. The most typical lattice constructions for metals are People attained by stacking the atomic spheres into one of the most compact arrangement.
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:
Solids which have brief-selection order but lack long-selection purchase are termed amorphous. Nearly any product can be made amorphous by immediate solidification within the soften (molten condition). This issue is unstable, and also the sound will crystallize in time. When the timescale for crystallization is a long time, then the amorphous state seems secure.
15The trick to a great thermoelectric content is a crystal construction where electrons can circulation 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。
的释�?浏览 cryptologist cryptology cryptorchidism cryptosporidium crystal crystal ball crystal apparent idiom copyright crystalline #randomImageQuizHook.filename #randomImageQuizHook.isQuiz 用我们的趣味配图小测验考考你的词汇量
The framework of the sodium atoms by itself, or even the chlorine atoms alone, is fcc and defines the unit cell. The sodium chloride structure thus is designed up of two interpenetrating fcc lattices. The cesium here chloride lattice (Figure 3A) is predicated on the bcc composition; just about every other atom is cesium or chlorine. In such a case, the unit mobile is usually a cube. The 3rd crucial framework for AB
⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。