27Local economists have seemed into their crystal balls and found a little something alternatively horrible.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》
A essential thought in crystal structures will be the unit mobile. It is the smallest unit of volume which allows equivalent cells to become arranged alongside one another to occupy all offered Area. The geometrical basis of all crystals will be the lattice. A lattice could be viewed as an everyday and infinite arrangement of points or atoms, where Each and every issue or atom has A similar bordering setting.
Chemical Bonds The types of chemical bonds formed in between atoms or teams of atoms in crystals rely on their dimensions and electronegativity. You will find four groups of crystals as grouped by their bonding:
We have penned about about 300 stones from the mineral kingdom! Examine Each and every stone's one of a kind origin, history, and energies underneath.
How Crystals Sort The whole process of forming a crystal is referred to as crystallization. Crystallization commonly occurs every time a reliable crystal grows from the liquid or Answer.
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。
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
Ionic Crystals: Electrostatic forces sort ionic bonds. A traditional instance is actually a halite or salt crystal.
13Nearly all personal computers incorporate a quartz-crystal clock to control their Procedure.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。
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。
天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。
Crystallography would be the review of crystals, and it promotions with all the things from best geometric designs to seemingly random conglomerations of particles and minerals.
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