Crystal for Dummies
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) appears to be a steel, but the number of electrons available for electrical conduction is similar to that of semiconductors. In actual fact, bismuth is termed a semimetal. Molecular solids are often crystals formed from molecules or polymers. They may be insulating, semiconducting, or metallic, dependant upon the variety of molecules inside the crystal. New molecules are continually remaining synthesized, and several are created into crystals. The number of diverse crystals is enormous.
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。
Tetragonal: These crystals kind prisms and double pyramids. The framework is like a cubic crystal, except just one axis is for a click here longer period than the other.
Crystalline structure is characterised by a geometric, repeating pattern of symmetric molecular structure. The arrangement of atoms sorts these requested, repeating patterns.
⑧、雕刻:立体感强,工艺高,做工精细,成本高。分手工雕刻图形、机器雕刻文字。
对任何宝石来说,颜色都是非常重要的,水晶也不例外。如果是水晶晶体是有颜色的,如粉水晶、黄水晶、紫水晶等,其颜色评价的最高标准则是明艳动人,不带有灰色、黑色、褐色等其他色调。如粉水晶,颜色以粉红为佳;紫水晶,要求颜色为鲜紫,纯净不发黑;黄水晶,要求颜色不含绿色、柠檬色调,以金橘色为佳。对于发晶来说,晶体的颜色也是很重要的。相同发丝的金发晶,晶体完全无色(白水晶)和晶体略偏茶色,肉眼的视觉观感也是有差别的,所以前者的价格会高于后者。
Hexagonal �?Characterized by 4 axes, 3 of which are equal in size and intersect at a hundred and twenty levels, using a fourth axis perpendicular to the opposite 3.
24I want to make my which means crystal distinct.我想把我的意思解释得清清楚楚。《牛津词典》
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
All crystal ball crystal apparent copyright liquid crystal crystal lattice crystal structure liquid crystal Show See all meanings Idioms and phrases crystal distinct idiom
水晶的价值还与块体大小有关,同样的颜色和净度级别,块越大越难得。有时候质量级别虽然低一些,但块体够大,也可能价格高于高级别的小晶体
crystal, any reliable product in which the ingredient atoms are organized inside a definite pattern and whose floor regularity reflects its inside symmetry.
21You all know the way once you have a crystal prism and go a beam of sunlight through it, you have a spectrum, which looks like a constant band of rainbow colors.