5 Simple Statements About Crystal Explained
5 Simple Statements About Crystal Explained
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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：
Bismuth (Bi) appears to get a metal, but the volume of electrons obtainable for electrical conduction is comparable to that of semiconductors. Actually, bismuth is termed a semimetal. Molecular solids are often crystals formed from molecules or polymers. They can be insulating, semiconducting, or metallic, depending upon the style of molecules in the crystal. New molecules are continuously remaining synthesized, and several are made into crystals. The number of different crystals is gigantic.
Chemical Bonds The kinds of chemical bonds shaped in between atoms or teams of atoms in crystals depend on their measurement and electronegativity. You can find 4 types of crystals as grouped by their bonding:
诗中道出一段唐代由盛变衰的史实。玄宗末年，杨贵妃得宠，三姐妹并封为国夫人。他们养尊处优，奢华至极，仆人用水晶盘将珍馐佳肴端到宴席上，美人觉得没有口味，懒得动筷子。作为“诗圣”作为“史诗”，紫驼一段写饮食之精美，不空发议论，只尽情揭露事实，无一刺讥语，无一慨叹声，却使人于以外得之：此诗之善讽也。以史为鉴，这样的世道，这样的人物，国家不出“安史之乱”那样的大祸反倒不正常了。
2She was donning a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
Monoclinic �?Characterised by a few unequal axes, two of which intersect at an oblique angle, when the third is perpendicular towards the airplane of the other two.
对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。
The elements are found in a variety of crystal packing preparations. The commonest lattice constructions for metals are People received by stacking the atomic spheres into the most compact arrangement.
水晶是有成色等级之分，影响水晶价位的因素很多，不像钻石以4C就可以判定，所以大家要多听多看多比较才能真正辨别出来。一般的标准是水晶石越大越好，越透越好，颜色越娇嫩越好，形状越典型越好。不过最重要还是自己喜欢，而选购时辨识真伪的方法大致有下列几种：
The definition of the good seems noticeable; a strong is generally thought of as getting challenging and company. Upon inspection, however, the definition turns into significantly less straightforward. A cube of butter, by way of example, is hard just after becoming saved inside of a refrigerator and it is clearly a sound. Soon after remaining on the kitchen area counter for each day, a similar cube gets quite soft, and it truly is unclear Should the butter must even now be deemed a stable.
say cheese something which somebody who is getting a photograph of you lets you know to state so that the mouth will make the shape of a smile
Crystallography is the research of crystals, and it specials with anything from ideal geometric styles to seemingly random conglomerations of particles and minerals.
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。
Binary crystals are found in a lot of buildings. Some pairs of check here factors sort multiple construction. At place temperature, cadmium sulfide might crystallize both while in the zinc blende or wurtzite composition. Alumina also has two possible structures at space temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit different buildings at different temperatures. Among the most elaborate crystals are Individuals of silicon dioxide (SiO2), which has 7 various structures at numerous temperatures and pressures; the commonest of such buildings is quartz.