How Much You Need To Expect You'll Pay For A Good Crystal
How Much You Need To Expect You'll Pay For A Good Crystal
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27Local economists have appeared into their crystal balls and noticed a little something relatively nasty.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》
Crystals are attractive rock formations which have surprised humans for A large number of yrs. They're used for quite a few different things, not just for decoration. A lot of the very first radios ever invented utilized crystals to transmit the radio waves. Some instruments, like quartz watches and laser crystals, use Unique Qualities and harmonic abilities of crystals to help make hugely exact measurements and changes.
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。
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
条痕颜色：无色。矿物粉末的颜色叫条痕。它可以消除假色，减弱他色，保留自色，是比矿物的颜色更为可靠的鉴定特征之一。
第二种是“半包裹体”，在水晶结晶以后，由于受到地球引力的影响而产生的裂隙，晶体外的一些物质通过水晶的裂隙渗透到水晶内部，一部分包裹于水晶之中另一部分露于水晶之外。我们可以看到物质渗进水晶的裂迹，常被称为“通道”，这种包裹体所形成的景象相对地较受自然环境和时间的影响，相应的价值也比较�?。
30Three times went earlier, and I used to be shocked to discover it once more: many of the openings have been sewed up by slender and white thread and so they appeared similar to the ice crystal on Wintertime's branches during the north.
②固体包裹体：指呈固态相存在包裹体，多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。
水晶包裹体丰富多彩，从气体、液体到各种矿物质，甚至宝石，均可被包含于水晶内，各种包裹体所形成的景象更是变化万千。按照包裹体的内容，常把包裹体水晶分为一下八类：
看文化：水晶里面的包裹体象形，能与文化、宗教及历史有所牵连的话，价格往往会比水晶本身的价值高出几倍甚至几百倍。
Through the Cambridge English Corpus We say the chain topology while in the substantial w area acts as being the proverbial ' scratch-on-theglass ' essential during the organic and natural chemistry laboratory to make crystals. With the Cambridge English Corpus Constant-force and temperature molecular-dynamics simulations of crystals on the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within the Cambridge English Corpus Besides these, dust particles have been observed in reduced-temperature plasmas, like All those used in plasma processing and plasma crystals. From the Cambridge English Corpus The final Portion of the guide concentrates on peculiarities of strongly coupled dusty plasmas, like the formation of dust crystals and associated beautiful forces. In the Cambridge English Corpus Entire characterization of damage threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. With the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Main morphologies were not noticed. From the Cambridge English Corpus See all examples of crystal These examples are from corpora website and from resources online. Any views while in the illustrations never signify the view on the Cambridge Dictionary editors or of Cambridge College Press or its licensors.
You'll find other minerals and molecules that could type these crystal lattices. Snowflakes are a traditional example of a roughly symmetric and geometrically patterned construction from ice crystals, and gemstones of all types are usually crystals.
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。
Sensible Vocabulary: connected text and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See far more results » You may also uncover connected words and phrases, phrases, and synonyms inside the subject areas: