An Unbiased View of Crystal
An Unbiased View of Crystal
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17These rings are indicative of the crystal framework of nickel and might be described only by invoking wavelike properties of sunshine.这些光圈表明了了镍的晶体结构，而且只能通过光线中波的特征来解释。
Bismuth (Bi) appears for being a metallic, but the number of electrons accessible for electrical conduction is comparable to that of semiconductors. In truth, bismuth is known as a semimetal. Molecular solids tend to be crystals formed from molecules or polymers. They are often insulating, semiconducting, or metallic, based on the variety of molecules in the crystal. New molecules are repeatedly currently being synthesized, and a lot of are created into crystals. The amount of various crystals is gigantic.
天然水晶是不可再生资源，随着开发的深入，天然水晶存量已越来越少，为了可持续发展，东海县政府早就制定了保护本地资源，鼓励开发海外水晶资源的政策，但是，海外资源也越来越少，很多国家都提高了开采和出口天然水晶的门槛，进入东海市场的外国水晶价格连年暴涨，其中观赏水晶比普通水晶涨价更快。
We've published about about 300 stones inside the mineral kingdom! Examine Just about every stone's distinctive origin, historical past, and energies down below.
2She was sporting a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
光泽：玻璃光泽。断口处为油脂光泽。光泽，指宝石表面对光线反射的一种光学性质。观察水晶的光泽，可用手握着它，以灯光或窗户投进来的光线看表面反射，透明水晶亮度与光泽强弱有关。
26Some of the best consuming Eyeglasses are made from lead crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
A lot of crystals behave like butter in that they're really hard at lower temperatures but smooth at larger temperatures. They're referred to as solids in the least temperatures beneath their melting point. A achievable definition of the solid is definitely an item that retains its shape if left undisturbed. The pertinent problem is how much time the object keeps its shape. A extremely viscous fluid retains its shape for an hour or so but not a 12 months. A stable should hold its shape lengthier than that.
A crystal system refers to the classification of crystals dependant on the geometric arrangement and symmetry of their lattice constructions. You can find 7 major crystal devices:
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。
The sodium chloride crystal lattice is characterized because of the close packing with the optimistic sodium ions and unfavorable chloride ions. Each and every sodium ion is surrounded by 6 chloride ions, and each chloride ion is surrounded by six sodium ions, developing a really steady and get more info symmetrical structure.
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。
⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。