New Step by Step Map For Crystal
New Step by Step Map For Crystal
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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) seems to get a metal, but the volume of electrons readily available for electrical conduction is similar to that of semiconductors. Actually, bismuth is named a semimetal. Molecular solids usually are crystals formed from molecules or polymers. They can be insulating, semiconducting, or metallic, according to the type of molecules from the crystal. New molecules are consistently becoming synthesized, and lots of are made into crystals. The number of unique crystals is gigantic.
景观水晶，就是包裹体组成各种造型特异的水晶，有的似山水，有的似人物，有些像文字，有些像动物，植物，器物等等。
第一种是“全包裹体”，在水晶结晶的时候把这些物质包裹在晶体里面，这类包裹体所形成的各种景象，大多保持了水晶结晶时的原状，也就是说保存了几亿年的原状，极少受到自然环境的影响。
There's also numerous products that resemble crystals but are actually polycrystals. Polycrystals form when microscopic crystals fuse together to kind a reliable. These supplies do not encompass ordered lattices.
当二氧化硅结晶完美时就是水晶；结晶不完美的就是石英：二氧化硅胶化脱水后就是玛瑙；二氧化硅含水的胶体凝固后就成为蛋白石；二氧化硅晶粒小于几微米时，就组成玉髓、燧石、次生石英岩。
水晶内部有多种矿物包裹体，形成的各种景观可以肉眼观测，这样的水晶就是包裹体水晶观赏石。由于水晶本身就是宝石，因此人们称誉包裹体水晶为“宝石级的观赏石”。包裹体水晶观赏石都具有独特性，具有极高欣赏和收藏价值。
26Some of the best drinking Eyeglasses are made out of direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》
Metallic Crystals: Metals generally form metallic crystals, where a number of the valence electrons are totally free to maneuver through the entire lattice. Iron, as an example, can kind unique metallic crystals.
英语-中文（简体） term #beta Beta /beta #preferredDictionaries ^picked title /selected /preferredDictionaries
Solitary crystals check here of metals are delicate and malleable, although polycrystalline metals are more difficult and more robust and are more useful industrially. Most polycrystalline products can be made into massive single crystals immediately after prolonged warmth procedure. In past times blacksmiths would warmth a bit of metal to make it malleable: heat makes several grains develop substantial by incorporating scaled-down kinds. The smiths would bend the softened steel into shape and afterwards pound it awhile; the pounding would ensure it is polycrystalline yet again, increasing its power.
Fig. one: Schematic of crystal formation from constructing blocks made up of a particle core and also a shell of DNA ligands connected for the particle surface area.
《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。”
A further form of crystalline carbon is based on the molecule with sixty carbon atoms termed buckminsterfullerene (C60). The molecular condition is spherical. Each and every carbon is bonded to a few neighbours, as in graphite, plus the spherical form is obtained by a mixture of twelve rings with five sides and 20 rings with 6 sides. Identical constructions ended up initial visualized by the American architect R. Buckminster Fuller for geodesic domes.