Detailed Notes on Crystal
Detailed Notes on Crystal
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This idea applies equally in one, two, and three-dimensional spaces. Your complete crystal lattice is usually created by repeatedly reproducing the pattern on the device mobile in all Instructions.
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。
A primary principle in crystal buildings may be the device cell. It's the smallest unit of volume that permits similar cells for being stacked jointly to fill all Room. By repeating the sample on the device mobile time and again in all Instructions, your complete crystal lattice might be built. A cube is the simplest illustration of a device cell. Two other illustrations are proven in Determine 1. The initial could be the unit cell for a experience-centred cubic lattice, and the next is for the human body-centred cubic lattice. These constructions are discussed in the following paragraphs.
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
There's also lots of supplies that resemble crystals but are actually polycrystals. Polycrystals sort when microscopic crystals fuse with each other to kind a stable. These materials do not consist of requested lattices.
无色水晶与无色长石因折射率和密度十分接近故较难区分。主要方法是放大检查。长石有两组极完全解理，显微镜下可见两组解理相交而成的“娱蛤状”包裹体或细直的纹理，而水晶则无解理发育，仅有时可见断续不规则的裂理。
Crystals glimpse special from a number of other rocks and minerals, but �?barring a few special scenarios �?almost all minerals conceal a crystalline construction underneath the surface area.
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。
24I want to make my indicating crystal very clear.我想把我的意思解释得清清楚楚。《牛津词典》
The definition of a sound appears clear; a reliable is usually regarded as becoming hard and firm. On inspection, even so, the definition becomes much less uncomplicated. A cube of butter, as an example, is tough following becoming saved in a very refrigerator and it is Plainly a strong. Just after remaining about the kitchen counter for on a daily basis, exactly the same cube turns into very smooth, and it is actually unclear if the butter need to nevertheless be thought of a strong.
All crystal ball crystal very clear copyright liquid crystal crystal lattice crystal framework liquid crystal display See all meanings Idioms and phrases crystal distinct idiom
The sodium chloride crystal lattice is characterised because of the near packing of the optimistic sodium ions and damaging chloride ions. Each and every sodium ion is surrounded by six chloride ions, and each chloride ion is surrounded by 6 sodium ions, making a very secure and symmetrical composition.
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。
Good Vocabulary: associated phrases and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See additional success » You may also come across connected words and phrases, phrases, website and synonyms inside the subjects: