5 Simple Techniques For Crystal

5 Simple Techniques For Crystal

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27Local economists have looked into their crystal balls and witnessed one thing somewhat awful.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》

12He tried yet again in quite a few other cities and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。

对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。

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。

You will find a number of crystals determined by geometric buildings, crystal progress, and materials. There may be preparations of hexagonal carbon atoms or amethyst which makes hexagonal pyramid buildings.

Not all crystals form in drinking water, but almost all crystals kind the exact same way, atoms arrive jointly and turn into a uniformed cluster. The process may take as tiny as a couple of days to it's possible a thousand decades. Pure crystals that originate from the Earth kind the exact same way.

水晶原石观赏石，从字面意义理解：观赏水晶石的原貌，即经过抛光去皮后的包裹体水晶和原色水晶，不需雕刻不求象形就具有非常高的观赏价值和收藏价值。此类水晶观赏石对质地要求非常之高，水晶晶体通透干净，颜色艳丽，意境鲜明深刻的价值就高，它的价值特点就好比钻石，实实在在石头本身的价值。

市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。

本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核，经科普中国·科学百科认�?。

晶体 Silicon crystals developed in the laboratory convert light into electrical energy. 在实验室中长成的硅晶体可将光线转变为电能。

One crystals of metals are gentle and malleable, when polycrystalline metals are more difficult and more powerful and tend to be more handy industrially. Most polycrystalline resources is often designed into significant single crystals soon after extended heat treatment. Before blacksmiths would heat a bit of metallic to really make it malleable: heat can make a handful of grains mature big by incorporating click here smaller sized kinds. The smiths would bend the softened metallic into form after which you can pound it awhile; the pounding would enable it to be polycrystalline once more, growing its toughness.

水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。

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21You all understand how once you have a crystal prism and pass a beam of daylight by way of it, you will get a spectrum, which looks like a ongoing band of rainbow colors.