Not known Factual Statements About Crystal
Not known Factual Statements About Crystal
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17These rings are indicative from the crystal structure of nickel and can be defined 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。
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体，这些包裹体的存在，影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质，与水晶整体不协调，被视为水晶的杂质，有这种杂质的水晶是次品。
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。
看原料：选料精良的水晶制品，应看不到胶口及棉絮；质地纯净、光润、晶莹为好。
There's also several supplies that resemble crystals but are actually polycrystals. Polycrystals sort when microscopic crystals fuse together to form a sound. These elements do not encompass purchased lattices.
Lattices could have just one lattice position for each cell or more than one, yielding a complete of fourteen Bravais crystal lattice sorts. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the 3-dimensional array produced by a set of discrete points.
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。
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
Metallic Crystals: Metals normally type metallic crystals, exactly where some of the valence electrons are absolutely free to move all through the lattice. Iron, such as, can type different metallic crystals.
crystal The recently crystallized quartz grains are characterised by elongate crystals oriented oblique towards the shear band margins, defining a standard grain-condition foliation. 来自 Cambridge English Corpus We are saying the chain topology inside the superior w region functions since the proverbial ' scratch-on-theglass ' essential while in the organic chemistry laboratory for making crystals. 来自 Cambridge English Corpus The age scatter amid the individual crystals may perhaps replicate incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, occasionally containing inclusions of plagioclase microlaths and opaque phases.
地质学家目前为止对晶洞形成还没有广泛认同的理论，但相信晶洞可以在任何埋藏的空腔内形成。这些空腔可以是火成岩中的气泡、树根下的空穴，甚至动物挖的地洞。经过漫长时间，空腔的外壁变硬，溶解的矽酸盐或方解石沉积到内壁。再经过漫长的时间，缓慢渗入的矿物使得晶体在空腔内部结晶。
You'll find only some diverse device-cell designs, so a number of crystals share only one device-cell style. A very important characteristic of a unit mobile is the quantity of atoms check here it includes. The whole variety of atoms in the complete crystal will be the number in each mobile multiplied by the quantity of device cells. Copper and aluminum (Al) each have just one atom for every device mobile, when zinc (Zn) and sodium chloride have two. Most crystals have just a few atoms for each unit cell, but there are many exceptions. Crystals of polymers, for example, have Many atoms in Every unit cell.
This Evaluate chronicles in excess of two decades of study into developing a genetic code for crystal engineering. In lieu of directing biological procedures, this code takes advantage of artificial varieties of DNA to programme the assembly of nanoparticles and microparticles into 1D, second and 3D crystalline architectures, in which nearly each individual facet of the resultant constructions can be systematically managed. In this conceptual framework, the structural and functional advances are described in order to outline the existing standard of sophistication and to forecast upcoming directions of the platform.
矿物成分：针铁矿、赤铁矿、金红石、磁铁矿、电气石、石榴石、云母、绿泥石等形成了包裹体水晶，如发晶、钛晶、绿幽灵等，发晶中则含有肉眼可见的似头发状的针状矿物的包裹体形成。含锰和铁者称紫水晶；含铁�?；呈金黄色或柠檬�?)称黄水晶；含锰和钛呈玫瑰色者称蔷薇石英，即粉水晶；烟色者称烟水晶；褐色者称茶晶；黑色透明者称为墨晶。