5 Easy Facts About Crystal Described
5 Easy Facts About Crystal Described
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Calcite crystals tend to be used in optical machines, and in some cases the graphite in pencil guide are sheets of crystals that fundamentally break apart layer by layer to write. Silica can type silicate crystals that happen to be The idea for quartz, mica, olivine, and all kinds of other crystals and minerals.
无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。
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。
Add to term listing Add to term record C2 [ U ] transparent glass of extremely high-quality, generally with its area Lower into fragile patterns
看抛光：抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。
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水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位，而对水晶来说，颜色和净度（水晶行业称作晶体）是近乎同等重要的因素：
11I carefully opened the package and located a crystal bell inside of.我小心地打开包裹，发现里面有一个水晶钟。
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
晶体 Silicon crystals developed inside a laboratory convert light-weight into electrical Strength. 在实验室中长成的硅晶体可将光线转变为电能。
With the Cambridge English Corpus We are saying the chain topology in the higher w location functions as the proverbial ' scratch-on-theglass ' needed while in the natural and organic chemistry laboratory to generate crystals. Within the Cambridge English Corpus Regular-tension and temperature molecular-dynamics simulations of crystals from the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. With the Cambridge English Corpus As well as these, dust particles are already noticed in small-temperature plasmas, like All those Employed in plasma processing and plasma crystals. In the Cambridge English Corpus The final Portion of the e-book focuses on peculiarities of strongly coupled dusty plasmas, like the development of dust crystals and connected appealing forces. Through the Cambridge English Corpus Entire characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. Through the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or maybe more irregular, Key morphologies were not noticed. In the Cambridge English Corpus See all samples of crystal These examples are from corpora and from sources on the net. get more info Any views in the examples tend not to represent the view on the Cambridge Dictionary editors or of Cambridge University Push or its licensors.
Crystal Lattices You will find 7 units of crystal constructions, that happen to be also known as lattices or Room lattices:
水精：水晶为何称为水精，《广雅》有巧解：�?水之精灵�?”；李时珍则说：�?莹洁晶光，如水之精英 ”。细加考究，此称还蕴含浓厚的宗教意味呢。水精一名，最初见于佛书，后汉支曜翻译的《具光明定意经》说：�?其所行道，色如水�?�?。
crystal Alteration is variable: absent in many crystals, in Many others producing dense sericite aggregates which can clearly show some recrystallization consequences to provide coarser-grained white mica. Within the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally organized in aggregates. With the Cambridge English Corpus In addition, haloarchaeal cells had been embedded inside of salt crystals less than laboratory conditions and subsequently analysed by mild microscopy. From your Cambridge English Corpus The white clouds (normally sparse) had been also widely regarded as getting composed of very small crystals of h2o ice, relatively like cirrus within our environment. From your Cambridge English Corpus They are really present in evaporite salt lakes and may be trapped in salt crystals throughout evaporation. With the Cambridge English Corpus Consequently, the cells (organelles and membranes) are wrecked mechanically by ice crystals, resulting in death by cell lysis. In the Cambridge English Corpus The crystals ended up Employed in the primary or 2nd orders of reflection. Within the Cambridge English Corpus In our 8xperiments, the crystals were cubes that has a foundation area of 8 e mm. From the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : outcome of temperature and tension.