An Unbiased View of Crystal
An Unbiased View of Crystal
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This concept applies equally in one, two, and a few-dimensional spaces. All the crystal lattice may be produced by continuously reproducing the sample in the unit mobile in all directions.
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。
结晶的形状非常细小，需要用显微镜才能看得清楚，外观上看起来是平滑、块状。常见最多的是各式玛瑙
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。
Find out how The form in the crystals figure out the different minerals into familiesMinerals crystallize As outlined by one of seven motifs, called crystal methods.
水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
26Some of the best consuming glasses are comprised of lead crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
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⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
There's two these types of feasible periodic arrangements. In Just about every, the primary layer has the atoms packed right into a airplane-triangular lattice in which each and every atom has 6 immediate neighbours. Determine two exhibits this arrangement for your atoms labeled A
You can find only some various device-cell styles, so a variety of crystals share only one unit-mobile style. An important characteristic of a unit cell is the quantity of atoms it includes. The total quantity of atoms in your entire crystal could be the number in Each and every cell multiplied by the number of unit cells. Copper and aluminum (Al) each have one atom for each unit cell, when zinc (Zn) and sodium chloride have two. Most crystals have only some atoms for every device mobile, but there are several exceptions. Crystals of polymers, by way of example, have Countless atoms in Every single device cell.
This Evaluate chronicles above 20 years of analysis into developing a genetic code for crystal engineering. As an alternative to directing Organic procedures, this code utilizes artificial varieties of DNA to programme the assembly of nanoparticles and microparticles into 1D, 2D and 3D crystalline architectures, in which nearly each individual element of the resultant structures can be systematically controlled. Inside of this conceptual framework, the structural and functional innovations are explained in order to determine the existing level of sophistication and also to forecast foreseeable future directions of the platform.
Wise Vocabulary: relevant words and phrases and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon read more unmined vermiculite vulcanicity See far more benefits » It's also possible to obtain related phrases, phrases, and synonyms in the topics: