An Unbiased View of Crystal
An Unbiased View of 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。
③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。
These developments contain exotic buildings with programmable lattice symmetries and effectively-outlined crystal habits, responsive elements that leverage the intrinsic properties of nucleic acids to control buildings on demand from customers, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals which provide insights into light–make a difference interactions. Wanting forward, we challenge the Neighborhood to leverage the amazing structural control afforded by crystal engineering with DNA to synthesize lessons of purposeful products that force over and above what has been feasible with Obviously taking place crystalline materials or Those people created by much more standard methods.
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
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。
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
Crystals search special from all kinds of other rocks and minerals, but �?barring a number of special circumstances �?almost all minerals conceal a crystalline structure beneath the area.
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
24I intend to make my meaning crystal apparent.我想把我的意思解释得清清楚楚。《牛津词典》
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
. The next layer is shaded from the figure. It's got the exact same plane-triangular framework; the atoms sit within the holes fashioned by the initial layer. The very first layer has two equivalent sets of holes, though the atoms of the second layer can occupy only one set. The 3rd layer, labeled C
Molecular Crystals: Complete molecules are bonded to one another within an arranged fashion. A very good case in point can be a sugar crystal, which incorporates sucrose molecules.
Crystals are labeled usually categories, like insulators, metals, semiconductors, and molecular solids. One crystal of an insulator is often clear and resembles a bit of glass. Metals are shiny Until they have rusted. Semiconductors are sometimes shiny and often clear but are by no means rusty. A lot of crystals can be categorized as one variety of strong, while some have intermediate conduct. Cadmium sulfide (CdS) might be ready in pure sort and is a superb insulator; when impurities are additional to cadmium sulfide, it will become a fascinating semiconductor.
crystal Alteration is variable: absent in several crystals, in Many others creating dense sericite aggregates which can exhibit some recrystallization effects to supply coarser-grained white mica. In the Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are sometimes organized in aggregates. Within the Cambridge English Corpus In addition, haloarchaeal cells were being embedded in just salt crystals underneath laboratory circumstances and subsequently analysed by mild microscopy. Within the Cambridge English Corpus The white clouds (normally sparse) were being also greatly here viewed as remaining made up of small crystals of drinking water ice, fairly like cirrus in our ambiance. Through the Cambridge English Corpus They may be located in evaporite salt lakes and may be trapped in salt crystals in the course of evaporation. From your Cambridge English Corpus Hence, the cells (organelles and membranes) are destroyed mechanically by ice crystals, resulting in death by way of cell lysis. From your Cambridge English Corpus The crystals ended up Employed in the first or next orders of reflection. From your Cambridge English Corpus In our 8xperiments, the crystals have been cubes by using a base region of eight e mm. In the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : influence of temperature and tension.