5 Essential Elements For Crystal

5 Essential Elements For Crystal

Blog Article

其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。

杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。

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。

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。

You will also find quite a few products that resemble crystals but are literally polycrystals. Polycrystals variety when microscopic crystals fuse jointly to sort a reliable. These materials tend not to include purchased lattices.

, has the same structure, but There's two decisions for selecting the holes that the atoms will occupy. The 3rd layer is often positioned over the atoms of the very first layer, generating an alternate layer sequence A

⑩、雷射内雕：以计算机辅助激光设备在水晶对象中进行三维图案的成型，艺术效果好，可以任意表达各类图案，图形，达到逼真效果

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。

13Nearly all computers have a quartz-crystal clock to regulate their operation.几乎所有的计算机都有一个石英晶体时钟来调节它们的运行。

crystal The recently crystallized quartz grains are characterized by elongate crystals oriented oblique into the shear band margins, defining a typical grain-shape foliation. 来自 Cambridge English Corpus We say the chain topology while in the higher w area functions as the proverbial ' scratch-on-theglass ' needed while in the organic chemistry laboratory to help make crystals. 来自 Cambridge English Corpus The age scatter among the person crystals may perhaps replicate incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene varieties neutral to pale brown, subhedral to anhedral crystals, at times containing inclusions of plagioclase microlaths and opaque phases.

15The trick to an excellent thermoelectric material is a crystal construction where electrons can stream freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。

There are other minerals and molecules that can kind these crystal lattices. Snowflakes are a traditional illustration of a roughly symmetric and geometrically patterned construction from ice crystals, and gemstones of all varieties are generally read more crystals.

14For instance, We've Quartz crystal clocks and watches precise to in a person minute a calendar year.例如，我们使用的每年误差不超过1分钟的石英水晶钟表和手表。

矿物成分：针铁矿、赤铁矿、金红石、磁铁矿、电气石、石榴石、云母、绿泥石等形成了包裹体水晶，如发晶、钛晶、绿幽灵等，发晶中则含有肉眼可见的似头发状的针状矿物的包裹体形成。含锰和铁者称紫水晶；含铁�?；呈金黄色或柠檬�?)称黄水晶；含锰和钛呈玫瑰色者称蔷薇石英，即粉水晶；烟色者称烟水晶；褐色者称茶晶；黑色透明者称为墨晶。