诗中“胜美玉”,“过冰清”,写出水晶的质地美,而“亦欲应时明”则描绘出水晶充满灵性的动态美,耐人寻味。罗维是有独特眼光,懂得水晶真谛,第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实;以水晶为直接吟咏对象的诗篇还有:
①压电效�?在机械力(压力或拉�?作用下,水晶单晶体的两端会产生电荷,其电量相等但符号相反。在工业上,无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
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。
If you would like see how crystals are fashioned, you could do a little challenge in your pretty have kitchen area and see the development with the crystals come about using your have eyes . This may be done by Placing a small number of desk salt into some standard faucet water, hold out 24 hrs, and you'll see good cubed formations. This transpires since the water is evaporating, which causes the atoms which make up the salt (the mineral) and the drinking water to come nearer jointly.
2She was wearing a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
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。
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。
1A crystal chandelier lit the space.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
Q.four. What is the distinction between atomic construction and crystal structure? Ans. The principal distinction between atomic structure and crystal framework lies inside their definitions: atomic construction refers to how atoms are organized inside a one molecule or perhaps a cluster of molecules, Whilst crystal construction concerns the particular arrangement of atoms inside of a reliable material.
crystal The newly crystallized quartz grains are characterised by elongate crystals oriented oblique towards the shear band margins, defining a normal grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology while in the large w area acts because the proverbial ' scratch-on-theglass ' wanted during the organic and natural chemistry laboratory to produce crystals. 来自 Cambridge English Corpus The age scatter among the the person crystals may well reflect incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene kinds neutral to pale brown, subhedral to anhedral crystals, often containing inclusions of plagioclase microlaths and opaque website phases.
All crystal ball crystal distinct copyright liquid crystal crystal lattice crystal framework liquid crystal Display screen See all meanings Idioms and phrases crystal obvious idiom
The sodium chloride crystal lattice is characterized by the close packing of your good sodium ions and detrimental chloride ions. Every single sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, creating a hugely steady and symmetrical framework.
《古今小说·李公子救蛇获称心》:“器皿皆是玻璃、水晶、琥珀、玛瑙为之,曲尽巧妙,非人间所有。”
The C60 molecules, also called buckyballs, are quite robust and Just about incompressible. Crystals are formed this sort of the balls are organized in an fcc lattice that has a one particular-nanometre spacing in between the centres of adjacent balls. The very similar C70 molecule has the shape of the rugby ball; C70 molecules also form an fcc crystal when stacked jointly. The stable fullerenes type molecular crystals, with weak binding—supplied by van der Waals interactions—among the molecules.