How Much You Need To Expect You'll Pay For A Good Crystal
How Much You Need To Expect You'll Pay For A Good Crystal
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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。
对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。
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�?”
2She was donning a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
Lattices may have a person lattice issue for each mobile or multiple, yielding a complete of 14 Bravais crystal lattice forms. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the 3-dimensional array produced by a set of discrete details.
Include to phrase checklist Incorporate to phrase listing [ C/U ] clear rock that looks like ice, or a piece of it
The weather are found in a number of crystal packing arrangements. The most typical lattice constructions for metals are All those acquired by stacking the atomic spheres into one of the most compact arrangement.
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
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From the Cambridge English Corpus We say the chain topology while in the substantial w location functions since the proverbial ' scratch-on-theglass ' wanted from the organic and natural chemistry laboratory for making crystals. Through the Cambridge English Corpus Consistent-stress and temperature molecular-dynamics simulations of crystals in the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From the Cambridge English Corpus In addition to these, dust particles happen to be noticed in very low-temperature plasmas, like All those Utilized in plasma processing and plasma crystals. From the Cambridge English Corpus The ultimate part of the e book focuses on peculiarities of strongly coupled dusty plasmas, such as the development of dust crystals and involved interesting forces. Through the Cambridge English Corpus Total characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From your Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Most important morphologies were not noticed. In the Cambridge English Corpus See all examples of crystal These illustrations are from corpora and from resources on the web. Any views within the examples never stand for the impression from the Cambridge Dictionary editors or of Cambridge College Press or its licensors.
Molecular Crystals: Entire molecules are bonded to each other in an organized fashion. A great case in point is often a sugar crystal, which includes sucrose molecules.
14For example, Now we have Quartz crystal clocks and watches exact to in one particular minute a calendar year.例如，我们使用的每年误差不超过1分钟的石英水晶钟表和手表。
Clever Vocabulary: relevant terms 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 unmined vermiculite vulcanicity See additional final results » You can even locate relevant terms, phrases, and synonyms click here within the topics: