An Unbiased View of Crystal
An Unbiased View of Crystal
Blog Article
17These rings are indicative on the crystal structure of nickel and might be explained only by invoking wavelike Qualities of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
A essential idea in crystal buildings would be the device cell. It is the smallest device of quantity which allows identical cells being arranged collectively to occupy all offered House. The geometrical basis of all crystals will be the lattice. A lattice can be viewed as a regular and infinite arrangement of factors or atoms, where Every single place or atom has an identical surrounding atmosphere.
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。
第一种是“全包裹体”，在水晶结晶的时候把这些物质包裹在晶体里面，这类包裹体所形成的各种景象，大多保持了水晶结晶时的原状，也就是说保存了几亿年的原状，极少受到自然环境的影响。
断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。
SMART Vocabulary: associated text and phrases Glass blower blowpipe bulletproof glass Reduce glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See more outcomes » You may as well come across connected phrases, phrases, and synonyms during the topics:
时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：
As a scorching Resolution cools or possibly a saturated Resolution evaporates, particles attract near adequate for chemical bonds to kind. Crystals may variety from deposition directly from the gas phase. Liquid crystals have particles oriented within an arranged manner, like strong crystals, nonetheless will be able to flow.
13Nearly all personal computers incorporate a quartz-crystal clock to control their operation.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。
say cheese a thing that somebody that is taking a photograph of you tells you to state so that the mouth makes the shape of a smile
用手去触摸水晶，天然水晶通常温度要比人造水晶的要凉的多；用眼观察，天然水晶通常有棉絮状的包裹体，这个是人造水晶所没有的。
Crystallography will be the study of crystals, and it specials with every thing from ideal geometric shapes to seemingly random conglomerations of particles and minerals.
玉石纹理如果能形成美丽的花纹、图案，其价格就高，如玛瑙内红白相间的色带有规律地排列，形成缠丝玛瑙时，碧玉中的不均匀颜色形成一种风景图案时，材料的价值将提高。当水晶内包裹体形成美丽的图案时，如幽灵水晶、风景水晶，或者针状包裹体呈束状排列时，其价值都高于普通的水晶。图案越美观、越有意境越好。
crystal Alteration is variable: absent in lots of crystals, in Other people manufacturing dense sericite aggregates which can display some recrystallization outcomes to produce coarser-grained white mica. From your Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are occasionally organized in aggregates. From the Cambridge English Corpus Moreover, haloarchaeal cells have been embedded inside salt crystals under laboratory problems and subsequently analysed by light-weight microscopy. Within the Cambridge English Corpus The white clouds (normally sparse) had been also widely considered remaining made up of tiny crystals of drinking water ice, relatively like cirrus inside our environment. In the Cambridge English Corpus They can be found in evaporite salt lakes and can be trapped in salt crystals through evaporation. Through the Cambridge English Corpus As a result, the cells (organelles and membranes) are destroyed mechanically by ice crystals, resulting in Dying by means more info of cell lysis. Within the Cambridge English Corpus The crystals were being used in the primary or 2nd orders of reflection. With the Cambridge English Corpus In our 8xperiments, the crystals ended up cubes having a foundation location of eight e mm. From your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : influence of temperature and force.