A Simple Key For Crystal Unveiled
A Simple Key For Crystal Unveiled
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27Local economists have seemed into their crystal balls and found something fairly awful.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
the solid condition of numerous basic substances, which have a daily shape and surfaces organized in equivalent designs
天然水晶是不可再生资源，随着开发的深入，天然水晶存量已越来越少，为了可持续发展，东海县政府早就制定了保护本地资源，鼓励开发海外水晶资源的政策，但是，海外资源也越来越少，很多国家都提高了开采和出口天然水晶的门槛，进入东海市场的外国水晶价格连年暴涨，其中观赏水晶比普通水晶涨价更快。
Fig. three: A library of lattice symmetries can be accessed by altering the particle Main and DNA shell.
Fig. 4: Constructing blocks with various styles and surface chemistries immediate the formation of distinct crystal symmetries.
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。
水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
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Q.four. What's the difference between atomic framework and crystal composition? Ans. The main difference between atomic composition and crystal structure lies of their definitions: atomic construction refers to how atoms are structured inside a one molecule or even a cluster of molecules, whereas crystal composition worries the precise arrangement of atoms within a reliable compound.
幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。
In the Cambridge English Corpus We are saying the chain topology inside the large w region functions as the proverbial ' scratch-on-theglass ' required inside the organic and natural chemistry laboratory to generate crystals. From your Cambridge English Corpus Constant-pressure and temperature molecular-dynamics simulations of crystals in the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From your Cambridge English Corpus Along with these, dust particles have been observed in low-temperature plasmas, like All read more those Utilized in plasma processing and plasma crystals. Through the Cambridge English Corpus The ultimate A part of the e-book focuses on peculiarities of strongly coupled dusty plasmas, including the formation of dust crystals and linked interesting forces. With the Cambridge English Corpus Complete characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. In the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Major morphologies weren't noticed. Within the Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from resources online. Any opinions inside the examples never stand for the belief with the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
Molecular Crystals: Full molecules are bonded to one another in an structured method. A very good instance can be a sugar crystal, which contains sucrose molecules.
Crystals are categorized generally speaking types, such as insulators, metals, semiconductors, and molecular solids. An individual crystal of the insulator is usually clear and resembles a bit of glass. Metals are shiny Except they've rusted. Semiconductors are sometimes shiny and in some cases clear but are hardly ever rusty. Many crystals can be categorised as only one style of sound, while others have intermediate behaviour. Cadmium sulfide (CdS) could be geared up in pure sort and is an excellent insulator; when impurities are extra to cadmium sulfide, it gets an interesting semiconductor.
水晶的价值根据品质、块体的大小、美感和产量多少的不同相差较大。遇到好的天然水晶要敢于下手，但好的水晶一般大家都想得到，值与不值，就要看经验了。由于天然水晶的开采和制作原因，没有瑕疵的水晶很难得到，纯净的饰品要达到与合成水晶媲美的品质，实在是很难得。另外，由于水晶的特性，在佩戴过程中，也会改变其等级，比如因为某种原因，有可能会逐渐产生较大裂纹。