The Basic Principles Of Crystal
The Basic Principles Of 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 tried once more in quite a few other cities 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。
A primary concept in crystal structures may be the device mobile. It's the smallest device of volume that allows equivalent cells to be stacked collectively to fill all space. By repeating the sample with the unit mobile repeatedly in all directions, your entire crystal lattice is often constructed. A cube is the simplest illustration of a device cell. Two other examples are shown in Determine 1. The very first could be the unit mobile for a facial area-centred cubic lattice, and the next is to get a body-centred cubic lattice. These constructions are explained in the subsequent paragraphs.
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。
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
These illustrations are from corpora and from resources online. Any viewpoints during the illustrations tend not to depict the opinion on the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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。
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
Q.four. What is the distinction between atomic structure and crystal construction? Ans. The primary distinction between atomic construction and crystal framework lies in their definitions: atomic structure refers to how atoms are structured inside a one molecule or even a cluster of molecules, Whilst crystal framework considerations the precise arrangement of atoms inside a stable compound.
Crystals with obvious flat faces are identified as euhedral crystals, even though These missing described faces are known as anhedral crystals. Crystals consisting of requested arrays of atoms that are not usually periodic are named quasicrystals.
16I opened the box and saw a bit of crystal snowflake along with a greeting card with "Joyful Birthday" in the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。
Molecular Crystals: more info Full molecules are bonded to one another within an arranged fashion. A fantastic illustration is usually a sugar crystal, which incorporates sucrose molecules.
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