5 Simple Statements About Crystal Explained
5 Simple Statements About Crystal Explained
Blog Article
对这类水晶晶簇观赏石的欣赏与评价，主要是强调晶体的完整、品种的名贵（如紫水晶、烟晶、发晶等）、造型奇特、含有名贵晶体（如辰砂、辉锑矿等）伴生等。晶簇产于矿床晶洞中，长相完美的并不多见，要完整无损地采集下来，又比较困难，故而采集起来代价较大，精品晶簇价值也就昂贵了。
A basic notion in crystal buildings would be the unit cell. It is the smallest device of quantity that allows similar cells to generally be organized together to occupy all accessible Place. The geometrical foundation of all crystals will be the lattice. A lattice could be seen as an everyday and infinite arrangement of points or atoms, where each level or atom has an identical bordering surroundings.
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。
Add to phrase listing Include to word checklist C2 [ U ] clear glass of extremely superior quality, ordinarily with its surface Slice into delicate styles
25If you're a Billy Crystal fan, you are going to really like 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。
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。
Crystals might be developed less than average disorders from all ninety two Normally developing features other than helium, and helium can be crystallized at minimal temperatures by utilizing twenty five atmospheres of force.
Cite When every single work has been designed to observe citation style guidelines, there might be some discrepancies. Please make reference to the appropriate fashion manual or other sources When you've got any thoughts. Choose Citation Fashion
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
. The 2nd layer is shaded while in the figure. It's a similar aircraft-triangular composition; the atoms sit from the holes fashioned by the very first layer. The primary layer has two equivalent sets of holes, but the atoms of the 2nd layer click here can occupy just one established. The 3rd layer, labeled C
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
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
Binary crystals are present in lots of structures. Some pairs of factors type multiple composition. At space temperature, cadmium sulfide might crystallize both inside the zinc blende or wurtzite framework. Alumina also has two probable buildings at home temperature, α-alumina (corundum) and β-alumina. Other binary crystals show various buildings at diverse temperatures. Among the many most intricate crystals are All those of silicon dioxide (SiO2), which has 7 distinct buildings at several temperatures and pressures; the most common of these constructions is quartz.