The 5-Second Trick For Crystal

The 5-Second Trick For Crystal

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轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。

12He attempted once more in many other metropolitan areas and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。

景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。

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。

C2 [ U ] transparent glass of quite top quality, normally with its surface area Reduce into fragile styles:

Lattices might have one particular lattice position per mobile or more than one, yielding a total of fourteen Bravais crystal lattice varieties. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the a few-dimensional array produced by a set of discrete details.

时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：

Ionic Crystals: Electrostatic forces sort ionic bonds. A vintage example is a halite or salt crystal.

Several crystals behave like butter in that they are difficult at very low temperatures but soft at bigger temperatures. They are named solids in the slightest degree temperatures below their melting issue. A attainable definition of a solid can be an item that retains its shape if left undisturbed. The pertinent situation is how much time the thing retains its shape. A extremely viscous fluid retains its condition for an hour or so but not a yr. A good have to continue to keep its condition lengthier than that.

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。

There are two these types of attainable periodic arrangements. In each, the primary layer has the atoms packed right into a aircraft-triangular lattice in which every atom has six quick neighbours. Determine two demonstrates this arrangement for your atoms labeled A

的释�?浏览 cryptologist cryptology cryptorchidism cryptosporidium crystal crystal ball crystal very clear idiom copyright crystalline #randomImageQuizHook.filename #randomImageQuizHook.isQuiz 用我们的趣味配图小测验考考你的词汇量

Crystals are categorized usually groups, like insulators, metals, semiconductors, and molecular solids. One crystal of an insulator is generally transparent and resembles a piece of glass. Metals are shiny Until they may have rusted. Semiconductors are sometimes shiny and in some cases transparent but are by no means rusty. Lots of crystals is often classified as only one type of good, while some have intermediate conduct. Cadmium sulfide (CdS) can read more be prepared in pure variety and is a wonderful insulator; when impurities are additional to cadmium sulfide, it gets a fascinating 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。