The 5-Second Trick For Crystal
The 5-Second Trick For Crystal
Blog Article
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:
①压电效�?在机械力(压力或拉�?作用下,水晶单晶体的两端会产生电荷,其电量相等但符号相反。在工业上,无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
4Without a crystal ball, It is unachievable to mention exactly where we will be subsequent 12 months.不用水晶球预卜未来,我们说不准明年处境如何呀。《牛津词典》
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。
这种水晶观赏石特指水晶晶簇,它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
Lattices can have a single lattice place per cell or more than one, yielding a complete of fourteen Bravais crystal lattice sorts. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the a few-dimensional array made by a set of discrete points.
时尚的收藏爱好者喜欢收藏天然水晶,却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶:
Hexagonal �?Characterised by 4 axes, a few of which might be equal in length and intersect at a hundred and twenty degrees, having a fourth axis perpendicular to one other three.
仿制钛晶树水晶:钛晶是水晶里价格最昂贵的,造假者当然也不会放过这么好的产品。天然的环境下,在水晶里能生长个像树一样的钛晶,完全是可能的,只是这样的货很少,那我们的造假专家是如何做的呢,白水晶底下打个洞,激光打点成板状的钛晶进去,就这样这块水晶的身价就能飙升几十倍。往往有的钛晶戒面,会采用将钛晶部位割成板状,与圆面的水晶粘合的方法来制作。
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。
Search cryptosporidiosis cryptosporidium cryptozoologist cryptozoology crystal crystal ball crystal distinct idiom crystal lattice BETA copyright #randomImageQuizHook.filename #randomImageQuizHook.isQuiz Test your vocabulary with our fun impression quizzes
Crystallography is the examine of crystals, and it discounts with every little thing from great geometric designs to seemingly random conglomerations of particles and minerals.
⑤、打孔:是在水晶成品未完成前,根据其所需打孔之尺寸及位置,以钻头加工,如制表件、笔筒、瓶孔等。
21You all know how when you take a crystal check here prism and pass a beam of daylight by way of it, you receive a spectrum, which looks like a ongoing band of rainbow colours.