The smart Trick of Crystal That No One is Discussing
The smart Trick of Crystal That No One is Discussing
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8Where can we get this magic wand and crystal ball?我们到哪里获得这种魔棒和水晶玻璃球？
12He tried using all over again in numerous other towns 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。
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 reliable supplies located in character exist in polycrystalline kind instead of as an individual crystal. They are actually made up of many grains (small crystals) packed with each other to fill all Room. Each and every person grain has a different orientation than its neighbours. While extended-range get exists within just one grain, with the boundary concerning grains, the ordering adjustments direction. A standard piece of iron or copper (Cu) is polycrystalline.
There are actually a variety of crystals based on geometric constructions, crystal development, and material. There is usually arrangements of hexagonal carbon atoms or amethyst that makes hexagonal pyramid structures.
第二种是“半包裹体”，在水晶结晶以后，由于受到地球引力的影响而产生的裂隙，晶体外的一些物质通过水晶的裂隙渗透到水晶内部，一部分包裹于水晶之中另一部分露于水晶之外。我们可以看到物质渗进水晶的裂迹，常被称为“通道”，这种包裹体所形成的景象相对地较受自然环境和时间的影响，相应的价值也比较�?。
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
26Some of the best ingesting glasses are produced from direct 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》
Metallic Crystals: Metals frequently form metallic crystals, the place a few of the valence electrons are cost-free to maneuver all over the lattice. Iron, such as, can sort unique metallic crystals.
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
被主体水晶所捕获的包裹体。原生包裹体通常为固相，形态较规则。水晶中典型的原成包裹体有金红石、电气石、黄铁矿等，也会见到岩石碎屑或集合体。
There are actually only a few distinctive unit-cell shapes, so a variety of crystals share a single unit-mobile style. A very important characteristic of a unit mobile is the quantity click here of atoms it consists of. The overall number of atoms in the whole crystal could be the amount in Every single mobile multiplied by the number of unit cells. Copper and aluminum (Al) Each and every have 1 atom per unit cell, when zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms per device mobile, but there are some exceptions. Crystals of polymers, for example, have Countless atoms in Each individual device cell.
The composition of the sodium atoms alone, or the chlorine atoms by itself, is fcc and defines the device mobile. The sodium chloride structure Therefore is produced up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) is predicated around the bcc construction; every single other atom is cesium or chlorine. In cases like this, the device mobile is often a dice. The 3rd significant construction for AB
The C60 molecules, also known as buckyballs, are pretty robust and Pretty much incompressible. Crystals are shaped these which the balls are organized in an fcc lattice having a one-nanometre spacing in between the centres of adjacent balls. The related C70 molecule has The form of the rugby ball; C70 molecules also sort an fcc crystal when stacked alongside one another. The reliable fullerenes variety molecular crystals, with weak binding—provided by van der Waals interactions—amongst the molecules.