CRYSTAL FOR DUMMIES

Crystal for Dummies

Crystal for Dummies

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李商隐,杜牧,白居易,欧阳修,苏轼,呈大昌,辛弃疾,杨万里,吴文英,杨基,魏源等诗坛,词林大家都有歌吟水晶的佳篇传世。

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。

水晶文化历史悠久,古人曾赋予它一串极富美感的雅称:水玉、水精、水碧、石英等。

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。

You can find many different crystals according to geometric buildings, crystal expansion, and substance. There could be arrangements of hexagonal carbon atoms or amethyst that makes hexagonal pyramid structures.

结晶�?When sea h2o is permitted to evaporate, salt crystals are deposited. 海水蒸发后,盐的结晶体就沉淀下来。

水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位,而对水晶来说,颜色和净度(水晶行业称作晶体)是近乎同等重要的因素:

26Some of the finest drinking Eyeglasses are produced from direct 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》

本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核,经科普中国·科学百科认�?。

Crystals with noticeable flat faces are termed euhedral crystals, whilst those missing outlined faces are known as anhedral crystals. Crystals consisting of ordered arrays of atoms that aren't generally periodic are named quasicrystals.

. The next layer is shaded during the figure. It has precisely the same aircraft-triangular framework; the atoms sit here from the holes shaped by the main layer. The first layer has two equal sets of holes, even so the atoms of the second layer can occupy just one established. The 3rd layer, labeled C

The arrangement of an atom’s electrons decides its chemical properties. The properties of solids tend to be predictable with the Attributes in their constituent atoms and molecules, and the different shell buildings of atoms are thus liable for the diversity of solids.

⑤、打孔:是在水晶成品未完成前,根据其所需打孔之尺寸及位置,以钻头加工,如制表件、笔筒、瓶孔等。

对于紫水晶黄水晶这样的单色水晶,通常要观察它的二色性,即使是最顶级的紫水晶黄水晶也是有色差的,通过这个方法可以鉴别是否加色。

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