Not known Details About Crystal

李商隐,杜牧,白居易,欧阳修,苏轼,呈大昌,辛弃疾,杨万里,吴文英,杨基,魏源等诗坛,词林大家都有歌吟水晶的佳篇传世。

Bismuth (Bi) seems being a metal, but the quantity of electrons available for electrical conduction is analogous to that of semiconductors. In fact, bismuth is termed a semimetal. Molecular solids are usually crystals shaped from molecules or polymers. They may be insulating, semiconducting, or metallic, with regards to the sort of molecules inside the crystal. New molecules are repeatedly getting synthesized, and lots of are created into crystals. The number of unique crystals is big.

结晶的形状非常细小,需要用显微镜才能看得清楚,外观上看起来是平滑、块状。常见最多的是各式玛瑙

Most good products present in nature exist in polycrystalline variety instead of as one crystal. They are literally made up of many grains (smaller crystals) packed jointly to fill all Area. Each individual particular person grain has a special orientation than its neighbours. While extensive-array get exists inside a person grain, with the boundary between grains, the ordering variations way. An average piece of iron or copper (Cu) is polycrystalline.

C2 [ U ] clear glass of really good quality, typically with its area Slash into sensitive styles:

当二氧化硅结晶完美时就是水晶;结晶不完美的就是石英:二氧化硅胶化脱水后就是玛瑙;二氧化硅含水的胶体凝固后就成为蛋白石;二氧化硅晶粒小于几微米时,就组成玉髓、燧石、次生石英岩。

水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位,而对水晶来说,颜色和净度(水晶行业称作晶体)是近乎同等重要的因素:

Hexagonal �?Characterised by 4 axes, a few of that happen to be equal in size and intersect at 120 degrees, using a fourth axis perpendicular to one other a few.

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[ C/U ] transparent glass of top of the range, ordinarily with its surface area Slash into styles that replicate mild

There's two this sort of possible periodic arrangements. In Just about every, the primary layer has the atoms packed right into a aircraft-triangular lattice in which every atom has six quick neighbours. Determine two reveals this arrangement to the atoms labeled A

The arrangement of the atom’s electrons establishes its chemical Houses. The Qualities of solids are often predictable with the Qualities of their constituent atoms and molecules, and the different shell structures of atoms are therefore accountable for the variety of solids.

⑦双色水晶:一种紫色和黄色共存一体的水晶,紫色、黄色之间界限较明显,分别占据晶块的一部分。

crystal Alteration is variable: absent in many crystals, in Other folks generating dense sericite aggregates which can display some recrystallization more info effects to create coarser-grained white mica. Through the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are sometimes arranged in aggregates. Within the Cambridge English Corpus Moreover, haloarchaeal cells ended up embedded in salt crystals below laboratory conditions and subsequently analysed by mild microscopy. From your Cambridge English Corpus The white clouds (typically sparse) have been also commonly viewed as staying composed of little crystals of water ice, rather like cirrus within our environment. From the Cambridge English Corpus These are found in evaporite salt lakes and might be trapped in salt crystals in the course of evaporation. In the Cambridge English Corpus Hence, the cells (organelles and membranes) are ruined mechanically by ice crystals, bringing about death by way of mobile lysis. From the Cambridge English Corpus The crystals ended up Utilized in the very first or next orders of reflection. In the Cambridge English Corpus Within our 8xperiments, the crystals had been cubes having a foundation space of 8 e mm. In the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : effect of temperature and pressure.

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