Crystal Can Be Fun For Anyone
Crystal Can Be Fun For Anyone
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其它描述：《庶物异名疏》中说： �?水精出大秦国，一名黎�?�?。结晶完整的水晶晶体，就如参差交错的马齿，所以人们又叫它马牙石。先民们最早用它研磨成眼镜片，因而送它一个眼镜石的绰号。水晶有通称，也有俗称。广州一带称水晶叫晶玉，又名鱼脑冻；江苏东海县山民发现水晶会 �?窜火�?�?，于是给它起个放光石的俗名。世间一物多名，不足为奇，而像水晶拥有这么多的别称，实不多见。瞧，从水玉、水碧、白玉、玉瑛、水精石英、黎难、晶玉到菩萨石、马牙石、眼镜石、放光石、千年冰、高山冻、鱼脑冻等等，简直构成一部奇石鉴赏史。
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These developments incorporate unique constructions with programmable lattice symmetries and very well-outlined crystal patterns, responsive elements that leverage the intrinsic Qualities of nucleic acids to control structures on demand, nanoparticle superlattices developed epitaxially from surfaces and colloidal crystals which offer insights into light–matter interactions. Hunting ahead, we problem the community to leverage the extraordinary structural Manage afforded by crystal engineering with DNA to synthesize classes of purposeful materials that push further than what is achievable with Normally developing crystalline resources or People made by much more common procedures.
The requested internal composition of enormous crystals, similar to the fluorite and quartz demonstrated below, is reflected in their geometric styles.
25If you are a Billy Crystal fan, you are going to adore this movie.如果你是比利·克里斯特尔的影迷，你就会喜欢这部电影。《柯林斯英汉双解大词典》
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水晶与高档宝石的净度要求有很大不同。高档宝石稀少罕见，所以一般人们普遍对高档宝石的净度不会过于苛求。而水晶的产量着实大得惊人，所以通常人们会要求水晶净度越高越好，尽量避免有较明显的内含物的水晶。
The weather are uncovered in many different crystal packing arrangements. The most typical lattice buildings for metals are All those attained by stacking the atomic spheres into by far the most compact arrangement.
Crystals will often be viewed as one thing of immense splendor, they usually are generally utilised with diamonds or other stones to create pieces of jewellery. Many crystals now are gentleman-made in laboratories.
22Working from what The us now knows about by itself, the bureau's specialists and other demographers give an irresistible, if clouded, crystal ball among the their visions.
Search cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal clear idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Exam your vocabulary with our fun image quizzes
The sodium chloride crystal lattice is characterised by the near packing on the positive sodium ions and negative chloride ions. Each individual sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, making a extremely secure and symmetrical construction.
This Assessment chronicles more than 20 years of investigate into creating a genetic code for crystal engineering. As opposed to directing biological processes, this code uses artificial varieties of DNA to programme the assembly of nanoparticles and microparticles into 1D, second and 3D crystalline architectures, in which just about every single element of the resultant buildings is usually systematically managed. Within this conceptual framework, the structural and functional developments are described in order to outline the website existing volume of sophistication and also to forecast foreseeable future Instructions from the platform.
Binary crystals are present in quite a few structures. Some pairs of components form more than one construction. At place temperature, cadmium sulfide may well crystallize both in the zinc blende or wurtzite construction. Alumina also has two achievable buildings at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals show various constructions at distinct temperatures. Among the many most advanced crystals are These of silicon dioxide (SiO2), which has seven distinctive buildings at several temperatures and pressures; the most typical of such structures is quartz.