The smart Trick of Crystal That No One is Discussing
The smart Trick of Crystal That No One is Discussing
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水晶表面坑洼的地方，有的深，有的浅，这是水晶在成长过程中自然形成的，并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体，由于包裹体和水晶结合部位的结合力不强，当表面抛光时，矿体脱落，留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。
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。
A standard idea in crystal structures is definitely the device mobile. It is the smallest device of volume that permits identical cells for being stacked jointly to fill all Room. By repeating the pattern on the unit mobile again and again in all Instructions, all the crystal lattice is usually manufactured. A cube is the simplest illustration of a unit mobile. Two other illustrations are demonstrated in Determine one. The first is definitely the device mobile for any encounter-centred cubic lattice, and the next is for your entire body-centred cubic lattice. These structures are defined in the subsequent paragraphs.
Insert to word list Incorporate to term listing C2 [ U ] transparent glass of incredibly good quality, generally with its area Slash into sensitive patterns
条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。
结晶�?When sea water is allowed 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 place.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
Q.4. Exactly what is the difference between atomic structure and crystal structure? Ans. The main distinction between atomic composition and crystal construction lies of their definitions: atomic composition refers to how atoms are organized inside a single molecule or maybe a cluster of molecules, whereas crystal framework considerations the precise arrangement of atoms in just a reliable material.
Solids that have limited-array buy but lack lengthy-range order are more info known as amorphous. Practically any product may be made amorphous by rapid solidification in the melt (molten condition). This problem is unstable, and the solid will crystallize in time. When the timescale for crystallization is a long time, then the amorphous condition seems steady.
Through the Cambridge English Corpus We say the chain topology within the higher w region acts because the proverbial ' scratch-on-theglass ' necessary inside the natural chemistry laboratory to generate crystals. From your Cambridge English Corpus Consistent-tension and temperature molecular-dynamics simulations of crystals of the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From your Cambridge English Corpus In addition to these, dust particles have been observed in reduced-temperature plasmas, like These Employed in plasma processing and plasma crystals. Within the Cambridge English Corpus The final Section of the ebook concentrates on peculiarities of strongly coupled dusty plasmas, like the development of dust crystals and associated desirable forces. From your Cambridge English Corpus Complete characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or more irregular, Key morphologies were not noticed. From the Cambridge English Corpus See all examples of crystal These illustrations are from corpora and from sources on the web. Any thoughts while in the illustrations don't symbolize the belief of the Cambridge Dictionary editors or of Cambridge University Push or its licensors.
水晶的价值还与块体大小有关，同样的颜色和净度级别，块越大越难得。有时候质量级别虽然低一些，但块体够大，也可能价格高于高级别的小晶体
水晶饰品越来越受到人们的喜爱。中国、日本、韩国、美国等国家的人们还对水晶球情有独钟，喜欢将它们摆在家里或办公室里，认为水晶球有灵性，能保平安，带来财运。不过天然水晶不像看起来那么晶莹剔透，它也有瑕疵，我们在选购饰品的时候要注意。此外，我们还要掌握水晶的评价依据、选购方法，这样可以帮助我们在琳琅满目的水晶饰品中选到心仪的水晶。
The C60 molecules, also known as buckyballs, are really strong and Practically incompressible. Crystals are formed these kinds of which the balls are arranged in an fcc lattice with a a single-nanometre spacing involving the centres of adjacent balls. The related C70 molecule has The form of the rugby ball; C70 molecules also type an fcc crystal when stacked jointly. The good fullerenes kind molecular crystals, with weak binding—supplied by van der Waals interactions—involving the molecules.