The smart Trick of Crystal That No One is Discussing
The smart Trick of Crystal That No One is Discussing
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诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：
无色水晶以晶莹美丽、洁净透明着称。衡量无色水晶主要看它的纯度，越纯、越透明越好。干净的、无瑕疵的、杂质少的价值就高。无色的水晶如果很脏，就没有利用价值。
A simple strategy in crystal constructions will be the unit mobile. It is the smallest device of volume that permits equivalent cells to be stacked together to fill all Room. By repeating the sample on the unit cell time and again in all directions, your complete crystal lattice can be constructed. A dice is the simplest example of a device cell. Two other examples are demonstrated in Determine one. The initial may be the unit cell for a deal with-centred cubic lattice, and the next is for your system-centred cubic lattice. These constructions are spelled out in the next paragraphs.
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。
《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。”
Lattices could have one lattice level for every mobile or more than one, yielding a total of 14 Bravais crystal lattice kinds. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array created by a set of discrete details.
水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
You will find a comparable directive about crystal glass which differentiates amongst full lead crystal, guide crystal and crystal.
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 recently crystallized quartz grains are characterised by elongate crystals oriented read more oblique to the shear band margins, defining an average grain-form foliation. 来自 Cambridge English Corpus We are saying the chain topology in the high w area functions given that the proverbial ' scratch-on-theglass ' wanted from the natural chemistry laboratory to make crystals. 来自 Cambridge English Corpus The age scatter between the person crystals may perhaps reflect incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene forms neutral to pale brown, subhedral to anhedral crystals, at times that contains inclusions of plagioclase microlaths and opaque phases.
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
The arrangement of an atom’s electrons determines its chemical properties. The Houses of solids tend to be predictable through the properties in their constituent atoms and molecules, and the various shell buildings of atoms are as a result responsible for the variety of solids.
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。