Crystal for Dummies
Crystal for Dummies
Blog Article
27Local economists have appeared into their crystal balls and viewed a little something rather nasty.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
A basic notion in crystal structures would be the device mobile. It's the smallest unit of quantity that enables identical cells to get arranged together to occupy all obtainable Area. The geometrical foundation of all crystals could be the lattice. A lattice is usually viewed as a regular and infinite arrangement of points or atoms, the place Each individual level or atom has A similar surrounding environment.
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。
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
Lattices may have a person lattice position for each mobile or multiple, yielding a total of fourteen Bravais crystal lattice forms. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the three-dimensional array made by a set of discrete factors.
⑦、镀彩：运用类似电镀的手法在水晶表面以不同的色彩，层面较薄，经摩擦可划伤�?；出现划痕，由于镀彩经常位于底部，因此在镀彩底部经常采用其它对象附着，如生肖文镇。
The elements are observed in many different crystal packing preparations. The most typical lattice constructions for metals are These acquired by stacking the atomic spheres into the most compact arrangement.
Cite When each and every effort has long been made to comply with citation design and style guidelines, there may be some discrepancies. Remember to check with the appropriate fashion handbook or other sources Should you have any issues. Pick out Citation Model
Solids which have short-assortment order but lack long-assortment buy are referred to as amorphous. Virtually any materials is often manufactured amorphous by swift solidification with the soften (molten point out). This issue more info is unstable, along with the good will crystallize in time. When the timescale for crystallization is many years, then the amorphous state appears secure.
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。
Crystals are not simply renowned for his or her physical physical appearance, but distinctive crystals of various supplies and formations can lead to a vast selection of employs and Bodily Qualities.
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
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。