How Much You Need To Expect You'll Pay For A Good Crystal
看颜色:即使在同一种类的水晶中,它的不同部位的纹理、色泽也各式各有千秋。属于单色的,要色度均匀;在同一块水晶上有深浅的,则要求其色调纹路美观大方。杂质、裂纹越少越好。质地好的水晶制品,应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点,则属于次品。
10This could be the silicon chip—just a little chip of silicon crystal.这是硅芯片——一个硅晶体的小芯片。
养殖晶:养殖晶是指,用天然水晶做种子,然后赋予天然水晶生长的高压条件,养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长,这样的水晶成分(分子式)与天然水晶是一摸一样的,唯一有差别的是,这样的水晶磁场作用没有天然水晶强。
看抛光:抛光的好坏直接影响到水晶制品的身价。抛光分为软抛光与硬抛光。
Intelligent Vocabulary: connected terms and phrases Glass blower blowpipe bulletproof glass Slash glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See a lot more benefits » It's also possible to locate relevant phrases, phrases, and synonyms within the matters:
30Three times went previous, and I used to be stunned to determine it again: each of the openings were sewed up by slender and white thread plus they looked much like the ice crystal on Wintertime's branches within the north.
市场上有很多人把熔炼水晶也叫做合成水晶,那是不准确的,一般都是以水晶废料为原料在高温高压下熔炼出来的,而不是结晶成的,不具备水晶的晶体特性,所以不能把熔炼水晶与合成水晶混为一谈;但是熔炼水晶耐高温,用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等,实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
Crystals are sometimes viewed as a thing of enormous magnificence, they usually are generally employed with diamonds or other stones for making items of jewellery. Nearly all crystals now are guy-produced in laboratories.
[ C/U ] transparent glass of top of the range, usually with its area Minimize into patterns that replicate mild
One crystals of metals are delicate and malleable, even though polycrystalline metals are more durable and stronger and tend to be more useful industrially. Most polycrystalline supplies could be made into significant single crystals following extended heat cure. In past times blacksmiths would heat a piece of metal to really check here make it malleable: heat helps make a number of grains grow substantial by incorporating scaled-down ones. The smiths would bend the softened steel into condition and afterwards pound it awhile; the pounding would ensure it is polycrystalline once again, increasing its strength.
The sodium chloride crystal lattice is characterized with the near packing with the positive sodium ions and damaging chloride ions. Each sodium ion is surrounded by 6 chloride ions, and each chloride ion is surrounded by six sodium ions, making a extremely stable and symmetrical structure.
The structure of your sodium atoms alone, or the chlorine atoms on your own, is fcc and defines the unit mobile. The sodium chloride structure So is built up of two interpenetrating fcc lattices. The cesium chloride lattice (Determine 3A) relies within the bcc construction; each individual other atom is cesium or chlorine. In cases like this, the device mobile is a dice. The third crucial construction for AB
水晶观赏石在形态、质地、内部特征等方面往往十分奇异。大自然有无限风光,都可以在包裹体水晶种找到缩影。