5 Essential Elements For Crystal
5 Essential Elements For Crystal
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27Local economists have appeared into their crystal balls and viewed a little something relatively unpleasant.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》
Crystals are attractive rock formations that have surprised individuals for Countless several years. They're useful for numerous various things, not just for decoration. Most of the initial radios at any time invented utilised crystals to transmit the radio waves. Some devices, like quartz watches and laser crystals, use Specific Qualities and harmonic abilities of crystals for making highly exact measurements and adjustments.
晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”
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 could have one lattice place for every mobile or more than one, yielding a total of 14 Bravais crystal lattice styles. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the 3-dimensional array created by a list of discrete points.
对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。
②固体包裹体：指呈固态相存在包裹体，多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。
Among the binary crystals, the easiest constructions to visualise are Those people with equivalent numbers of The 2 types of atoms. The framework of sodium chloride is predicated with a cube. To construct the lattice, the sodium and chlorine atoms are placed on alternate corners of a cube, along with the composition is repeated (Figure 3B).
say cheese something which someone that is having a photograph of you tells you to mention so that your mouth makes the shape of a smile
16I read more opened the box and observed a bit of crystal snowflake plus a greeting card with "Pleased Birthday" during the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。
The sodium chloride crystal lattice is characterized by the shut packing of the optimistic sodium ions and destructive chloride ions. Every single sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, making a remarkably steady and symmetrical structure.
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。
The C60 molecules, also known as buckyballs, are fairly robust and Just about incompressible. Crystals are shaped such that the balls are organized in an fcc lattice having a a single-nanometre spacing in between the centres of adjacent balls. The identical C70 molecule has the shape of a rugby ball; C70 molecules also sort an fcc crystal when stacked jointly. The good fullerenes sort molecular crystals, with weak binding—supplied by van der Waals interactions—amongst the molecules.