New Step by Step Map For Crystal
New Step by Step Map For Crystal
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A sound is crystalline if it's prolonged-selection buy. As soon as the positions of an atom and its neighbours are known at just one stage, the area of each atom is thought exactly through the crystal. Most liquids lack extended-vary buy, Even though lots of have small-variety purchase. Short vary is defined as the first- or second-closest neighbours of the atom. In many liquids the very first-neighbour atoms are arranged in the same framework as in the corresponding good stage.
23Sometimes, however, the crystal method of the silicate inclusions is noticed to resemble a lot more closely The interior framework of diamond than that of other silicate minerals.然而，有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
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。
Fig. 7: A template-directed tactic can Regulate the placement of setting up blocks on a surface from the development of complex constructions.
《全唐诗》卷七八五载《白雪歌》：“鸟啄冰潭玉镜开，风敲檐溜水晶折。”
They may ultimately produce a nice small uniform cluster of atoms, That is the process of escalating crystals. The greater they will appear together, the more of the development are going to be visible into the bare eye. Scientists can establish what mineral They may be taking a look at by how the crystals sort.
⑦、镀彩：运用类似电镀的手法在水晶表面以不同的色彩，层面较薄，经摩擦可划伤�?；出现划痕，由于镀彩经常位于底部，因此在镀彩底部经常采用其它对象附着，如生肖文镇。
损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。
仿制钛晶树水晶：钛晶是水晶里价格最昂贵的，造假者当然也不会放过这么好的产品。天然的环境下，在水晶里能生长个像树一样的钛晶，完全是可能的，只是这样的货很少，那我们的造假专家是如何做的呢，白水晶底下打个洞，激光打点成板状的钛晶进去，就这样这块水晶的身价就能飙升几十倍。往往有的钛晶戒面，会采用将钛晶部位割成板状，与圆面的水晶粘合的方法来制作。
crystal The newly crystallized quartz grains are characterised by elongate crystals oriented oblique for the shear band margins, defining a typical grain-condition foliation. 来自 Cambridge English Corpus We say the chain topology in the superior w area acts since the proverbial ' scratch-on-theglass ' essential inside the natural chemistry laboratory to make crystals. 来自 Cambridge English Corpus The age scatter amongst the individual crystals might reflect incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene forms neutral to here pale brown, subhedral to anhedral crystals, once in a while containing inclusions of plagioclase microlaths and opaque phases.
say cheese something which a person who is getting a photograph of you informs you to state so that the mouth will make The form of the smile
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
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。
The C60 molecules, also called buckyballs, are pretty sturdy and Pretty much incompressible. Crystals are formed such which the balls are organized within an fcc lattice having a just one-nanometre spacing amongst the centres of adjacent balls. The identical C70 molecule has The form of the rugby ball; C70 molecules also sort an fcc crystal when stacked collectively. The reliable fullerenes sort molecular crystals, with weak binding—provided by van der Waals interactions—amongst the molecules.