5 Simple Statements About Crystal Explained
5 Simple Statements About Crystal Explained
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27Local economists have seemed into their crystal balls and found something somewhat unpleasant.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》
Bismuth (Bi) appears to generally be a metal, but the number of electrons accessible for electrical conduction is analogous to that of semiconductors. Actually, bismuth known as a semimetal. Molecular solids are frequently crystals fashioned from molecules or polymers. They can be insulating, semiconducting, or metallic, depending upon the variety of molecules from the crystal. New molecules are continuously staying synthesized, and plenty of are created into crystals. The volume of different crystals is gigantic.
看做工：水晶制品加工过程分为两种，即磨工和雕工。如水晶项链、手链、耳环等属于研磨品；观音像、内画鼻烟壶等属于雕刻品。
We've penned about in excess of 300 stones from the mineral kingdom! Read about Every single stone's distinctive origin, history, and energies down below.
25If you are a Billy Crystal supporter, you may adore this film.如果你是比利·克里斯特尔的影迷，你就会喜欢这部电影。《柯林斯英汉双解大词典》
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
30Three days went past, and I was astonished to see it once again: all of the openings were sewed up by thin and white thread and so they appeared much like the ice crystal on Winter season's branches while in the north.
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。
第三种是“皮景”，因某些其他的矿物与水晶体共生，或由于其他的物质侵蚀而依附于水晶表面，或者是水晶受自然环境的影响，在水晶表面出现蚀象，形成了一些景象或图案，这种景观存在于水晶表面。
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
Solitary crystals of metals are soft and malleable, even though polycrystalline metals are more difficult and stronger and are more valuable industrially. Most polycrystalline resources could be manufactured into massive single crystals following extended warmth procedure. Up to now blacksmiths would warmth a piece of steel to really make it malleable: warmth helps make a few grains increase massive by incorporating smaller kinds. The smiths would bend the softened steel into shape and after that pound it awhile; the pounding would make it polycrystalline yet again, raising its power.
Fig. one: Schematic of crystal development from constructing blocks composed of a particle core and a shell of DNA ligands hooked up into the more info particle surface.
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21You all know how after you have a crystal prism and pass a beam of sunlight by means of it, you get a spectrum, which looks like a ongoing band of rainbow colours.