27Local economists have appeared into their crystal balls and witnessed a little something somewhat horrible.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》
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晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
If you'd like to see how crystals are shaped, you are able to do some project within your really personal kitchen and see the development from the crystals arise using your individual eyes . This can be done by putting a small volume of desk salt into some frequent faucet water, wait 24 hours, and you will see wonderful cubed formations. This comes about because the h2o is evaporating, which brings about the atoms that make up the salt (the mineral) and also the water to return nearer together.
Fig. four: Creating blocks with distinctive designs and floor chemistries direct the formation of distinctive crystal symmetries.
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。
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Ionic Crystals: Electrostatic forces sort ionic bonds. A typical example can be a halite or salt crystal.
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晶体 Silicon crystals grown in a laboratory transform mild into electrical Electricity. 在实验室中长成的硅晶体可将光线转变为电能。
All crystal ball crystal clear click here copyright liquid crystal crystal lattice crystal framework liquid crystal Screen See all meanings Idioms and phrases crystal very clear idiom
There are actually only some various device-mobile designs, so many different crystals share an individual unit-mobile sort. A significant characteristic of the unit cell is the volume of atoms it incorporates. The whole variety of atoms in the complete crystal is the range in Just about every cell multiplied by the amount of unit cells. Copper and aluminum (Al) Each and every have one atom per device cell, although zinc (Zn) and sodium chloride have two. Most crystals have just a few atoms for each unit cell, but there are a few exceptions. Crystals of polymers, for instance, have 1000s of atoms in Every single device cell.
水精：水晶为何称为水精，《广雅》有巧解：�?水之精灵�?”；李时珍则说：�?莹洁晶光，如水之精英 ”。细加考究，此称还蕴含浓厚的宗教意味呢。水精一名，最初见于佛书，后汉支曜翻译的《具光明定意经》说：�?其所行道，色如水�?�?。
SMART Vocabulary: associated terms and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See additional benefits » You may also uncover related text, phrases, and synonyms within the subject areas: