8Where do 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？
杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。
发晶的价值取决于发的颜色、罕见性及大小，一般是发色鲜艳、块度大的价格高。水胆水晶的价值主要取决于水胆及晶体的大小、透明度的高低。如果水胆较大并有一定形态，便可加工成较为珍贵的工艺品。另外水胆中的水也有一定的科学研究价值，通过它们可了解几百万年前地球上水的成分及变化。
If you want to see how crystals are formed, you may do a little project inside your very own kitchen area and see the formation on the crystals come about together with your very own eyes . This may be done by putting a little level of desk salt into some standard faucet water, wait around 24 hours, and you may see great cubed formations. This transpires as the h2o is evaporating, which brings about the atoms that make up the salt (the mineral) plus the h2o to return nearer alongside one another.
《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。”
Monoclinic �?Characterised by a few unequal axes, two of which intersect at an oblique angle, though the 3rd is perpendicular to your plane of another two.
Crystals appear exclusive from all kinds of other rocks and minerals, but �?barring a number of Specific circumstances �?nearly all minerals cover a crystalline composition underneath the floor.
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。
Several crystals behave like butter in that they're really hard at low temperatures but tender at larger temperatures. They are named solids whatsoever temperatures beneath their melting point. A feasible definition of the strong is surely an object that retains its condition if still left undisturbed. The pertinent challenge is how much time the item keeps its form. A highly viscous fluid retains its condition for an hour or so although not a year. A strong ought to preserve its shape for a longer period than that.
[ C/U ] transparent glass of top of the range, usually with its surface Minimize into designs that mirror light
⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。
Crystals are not just renowned for his or her physical look, but distinctive crystals of various materials and formations may end up in an enormous number of works by using and Actual physical Homes.
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。
crystal Alteration is variable: absent in lots of crystals, in Other individuals developing dense sericite aggregates which can show some recrystallization outcomes to produce coarser-grained white mica. In the Cambridge English Corpus The tridymite crystals are rectangular or wedge-shaped and are occasionally organized in aggregates. Within the Cambridge English Corpus Additionally, haloarchaeal cells ended up embedded in just salt crystals underneath laboratory ailments and subsequently analysed by mild microscopy. Within the Cambridge English Corpus The white clouds (generally sparse) had been also widely regarded as currently being composed of very small crystals of water ice, alternatively like cirrus inside our atmosphere. With the Cambridge English Corpus These are found in evaporite salt lakes and will be trapped in salt crystals in the course of evaporation. From your Cambridge English Corpus Hence, the cells (organelles and membranes) are wrecked mechanically by ice crystals, leading to Dying by cell lysis. With the Cambridge English Corpus The crystals had been used in the primary or 2nd orders of reflection. With the Cambridge English Corpus Inside our 8xperiments, the crystals ended up cubes that has a foundation more info location of 8 e mm. Within the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : effect of temperature and force.