Crystal for Dummies
Crystal for Dummies
Blog Article
8Where do we get this magic wand and crystal ball?我们到哪里获得这种魔棒和水晶玻璃球？
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
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。
Most good components found in character exist in polycrystalline kind as opposed to as one crystal. They are actually made up of numerous grains (small crystals) packed alongside one another to fill all Area. Each individual particular person grain has a special orientation than its neighbours. Although lengthy-array get exists in one particular grain, within the boundary among grains, the ordering alterations path. An average piece of iron or copper (Cu) is polycrystalline.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
Lattices may have one particular lattice level per cell or multiple, yielding a complete of fourteen Bravais crystal lattice sorts. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array made by a set of discrete factors.
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。
11I diligently opened the offer and found a crystal bell inside.我小心地打开包裹，发现里面有一个水晶钟。
包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。
crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique to the shear band margins, defining a standard grain-shape foliation. 来自 Cambridge English Corpus We say the chain topology within the high w area functions as being the proverbial ' scratch-on-theglass ' essential within the natural and organic chemistry laboratory to help make crystals. 来自 Cambridge English Corpus The age scatter between the individual crystals may mirror incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene types neutral to pale brown, subhedral to anhedral crystals, once in a while that contains inclusions of plagioclase microlaths and opaque phases.
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
The arrangement of the atom’s electrons establishes its chemical Attributes. The Qualities of solids are often predictable from your Houses of their constituent atoms and molecules, and the several click here shell structures of atoms are thus to blame for the diversity of solids.
The construction of the sodium atoms by itself, or even the chlorine atoms alone, is fcc and defines the unit mobile. The sodium chloride structure Consequently is designed up of two interpenetrating fcc lattices. The cesium chloride lattice (Figure 3A) is based around the bcc structure; every other atom is cesium or chlorine. In this case, the device cell is actually a dice. The third critical composition for AB
Fig. 5: The ability to notice outlined crystal habits is dependent on the symmetry engineering tactic.