The Definitive Guide to Crystal
The Definitive Guide to Crystal
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对这类水晶晶簇观赏石的欣赏与评价,主要是强调晶体的完整、品种的名贵(如紫水晶、烟晶、发晶等)、造型奇特、含有名贵晶体(如辰砂、辉锑矿等)伴生等。晶簇产于矿床晶洞中,长相完美的并不多见,要完整无损地采集下来,又比较困难,故而采集起来代价较大,精品晶簇价值也就昂贵了。
Crystals are attractive rock formations which have shocked individuals for A large number of several years. They may be used for a lot of different things, not just for decoration. Many of the very first radios ever invented utilized crystals to transmit the radio waves. Some instruments, like quartz watches and laser crystals, use Distinctive properties and harmonic capabilities of crystals to help make very exact measurements and changes.
4Without a crystal ball, It is not possible to convey exactly where we are going to be following year.不用水晶球预卜未来,我们说不准明年处境如何呀。《牛津词典》
Fig. seven: A template-directed method can Command The position of making blocks on a floor within the formation of elaborate buildings.
. These 4 buildings comprise the vast majority of binary crystals with equivalent numbers of cations and anions.
你们都知道,拿起一个水晶棱镜,让一束阳光通过它,就会得到一个光谱,看起来就像一条连续的彩虹色带。
水晶内部有多种矿物包裹体,形成的各种景观可以肉眼观测,这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石,因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性,具有极高欣赏和收藏价值。
11I meticulously opened the deal and found a crystal bell within.我小心地打开包裹,发现里面有一个水晶钟。
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say cheese a thing that someone who is having a photograph of you tells you to convey so that the mouth makes the shape of a smile
天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值,但是包裹体水晶观赏石经常需要适当打磨抛光,这样更方便观赏水晶内部的包裹体。
Fig. 1: Schematic of crystal development from setting up blocks made up of a particle core along with a shell of DNA ligands attached towards the particle area.
⑨、喷砂:立体感弱,较平整,无凹凸感,机器雕刻文字、图形等后进行效果处理。成本低制作快。
An additional type of crystalline carbon relies over a molecule with sixty carbon atoms referred to as buckminsterfullerene (C60). The molecular website shape is spherical. Every single carbon is bonded to three neighbours, as in graphite, and the spherical shape is reached by a mix of 12 rings with five sides and 20 rings with 6 sides. Equivalent constructions have been 1st visualized via the American architect R. Buckminster Fuller for geodesic domes.