The Basic Principles Of Crystal
The Basic Principles Of Crystal
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对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
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。
Chemical Bonds The categories of chemical bonds shaped in between atoms or groups of atoms in crystals rely upon their sizing and electronegativity. You will find 4 categories of crystals as grouped by their bonding:
Tetragonal: These crystals form prisms and double pyramids. The structure is sort of a cubic crystal, other than one axis is lengthier than the opposite.
C2 [ U ] transparent glass of extremely good quality, commonly with its surface area Slice into delicate styles:
你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。
Insert to phrase checklist Add to word list [ C/U ] clear rock that looks like ice, or perhaps a bit of it
11I carefully opened the package and found a crystal bell within.我小心地打开包裹，发现里面有一个水晶钟。
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英语-中文（简体） word #beta Beta /beta #preferredDictionaries ^selected name /selected /preferredDictionaries
被主体水晶所捕获的包裹体。原生包裹体通常为固相，形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等，也会见到岩石碎屑或集合体。
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
This Critique chronicles above two decades of investigate into developing a genetic code for crystal engineering. Rather than directing Organic processes, this code utilizes artificial kinds of DNA to programme the assembly of nanoparticles and microparticles into 1D, second and 3D crystalline architectures, in which just about just about every aspect of the resultant buildings may be systematically controlled. In just this conceptual framework, the structural and practical improvements are described in here an effort to outline the present level of sophistication and also to forecast long term Instructions from the System.
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。