How Crystal can Save You Time, Stress, and Money.
How Crystal can Save You Time, Stress, and Money.
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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：
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看做工：水晶制品加工过程分为两种，即磨工和雕工。如水晶项链、手链、耳环等属于研磨品；观音像、内画鼻烟壶等属于雕刻品。
Incorporate to word checklist Incorporate to term checklist C2 [ U ] clear glass of quite top quality, ordinarily with its surface Slash into fragile styles
25If you're a Billy Crystal enthusiast, you may adore this film.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》
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。
Insert to term record Insert to word list [ C/U ] clear rock that looks like ice, or possibly a piece of it
Crystals might be grown underneath average problems from all ninety two naturally happening factors besides helium, and helium could be crystallized at reduced temperatures by utilizing twenty five atmospheres of pressure.
Metallic Crystals: Metals frequently sort metallic crystals, in which a few of the valence electrons are free of charge to move through the lattice. Iron, by way of example, can form distinct metallic crystals.
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
The essential units of solids are both atoms or atoms which have mixed into molecules. The electrons of the atom go in orbits that type a shell composition across the nucleus. The shells are crammed in a systematic buy, with Just about every shell accommodating only a small number of electrons. Distinct atoms have diverse quantities of electrons, which happen to be dispersed inside of a characteristic electronic construction of crammed and partly filled shells.
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
压电性：水晶晶体受到压力时会产生电荷；反之，受到电压作用时，晶体会产生频率很高的振动。水晶具有可使压力与电荷相互转移的性能，称压电性。
One more form of crystalline carbon is predicated on a molecule with 60 carbon atoms called buckminsterfullerene (C60). The molecular form is spherical. Each carbon is bonded to 3 neighbours, as in graphite, and also the spherical shape is accomplished by a mix of 12 rings with five sides and twenty rings with six sides. Very similar buildings were being first visualized through the American architect R. Buckminster Fuller for geodesic check here domes.