How Crystal can Save You Time, Stress, and Money.
How Crystal can Save You Time, Stress, and Money.
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27Local economists have seemed into their crystal balls and witnessed some thing alternatively terrible.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
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。
水晶文化历史悠久，古人曾赋予它一串极富美感的雅称：水玉、水精、水碧、石英等。
Substantial crystals of diamond are precious gemstones. The crystal has other appealing properties; it has the highest audio velocity of any good and is the best conductor of warmth. Besides diamond, another prevalent type of carbon is graphite, which happens to be a layered material. Each carbon atom has a few coplanar close to neighbours, forming an arrangement called the honeycomb lattice. A few-dimensional graphite crystals are attained by stacking similar levels.
断口：贝壳状。断口也叫破口。它是指矿物被打击后产生不规则的破裂，破裂裂面凹凸不平称为断口。根据断口的形状可分为贝壳状和锯齿状。
发晶，包括钛晶，铜顺发，绿发晶，黑发晶，银发晶，杂色发晶，其中钛晶最珍贵，少数钛晶价值可比钻石，红宝石和蓝宝石以及祖母绿。
Add to word checklist Add to phrase checklist [ C/U ] clear rock that looks like ice, or even a piece of it
Crystals are very little in excess of an ordered arrangement of molecules or atoms. Crystals are available in numerous sizes and shapes, and every one has distinctive features. Whatever they are created of determines how it will eventually type.
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
. The 2nd layer is shaded within the figure. It more info has the same airplane-triangular structure; the atoms sit in the holes fashioned by the 1st layer. The 1st layer has two equivalent sets of holes, however the atoms of the second layer can occupy only one set. The third layer, labeled C
Crystals are not only renowned for their physical visual appeal, but different crystals of various materials and formations can lead to an enormous range of takes advantage of and Actual physical Qualities.
《古今小说·李公子救蛇获称心》：“器皿皆是玻璃、水晶、琥珀、玛瑙为之，曲尽巧妙，非人间所有。”
21You all know the way once you have a crystal prism and pass a beam of sunlight via it, you can get a spectrum, which appears like a continual band of rainbow colours.