Not known Factual Statements About Crystal
Not known Factual Statements About Crystal
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李商隐,杜牧,白居易,欧阳修,苏轼,呈大昌,辛弃疾,杨万里,吴文英,杨基,魏源等诗坛,词林大家都有歌吟水晶的佳篇传世。
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体,这些包裹体的存在,影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质,与水晶整体不协调,被视为水晶的杂质,有这种杂质的水晶是次品。
结晶的形状非常细小,需要用显微镜才能看得清楚,外观上看起来是平滑、块状。常见最多的是各式玛瑙
The requested inside composition of huge crystals, much like the fluorite and quartz proven in this article, is mirrored within their geometric shapes.
2She was sporting a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
They will at some point generate a awesome little uniform cluster of atoms, This is certainly the entire process of increasing crystals. The more they might arrive with each other, the greater of a formation will likely be obvious towards the naked eye. Researchers can establish what mineral They are really looking at by how the crystals variety.
30Three times went past, and I used to be stunned to determine it yet again: every one of the openings were being sewed up by slim and white thread they usually seemed such as the ice crystal on Winter season's branches within the north.
1A crystal chandelier lit the space.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
Crystals in many cases are viewed as something of immense elegance, plus they are generally employed with diamonds or other stones to produce pieces of jewellery. Virtually all crystals now are male-designed in laboratories.
看文化:水晶里面的包裹体象形,能与文化、宗教及历史有所牵连的话,价格往往会比水晶本身的价值高出几倍甚至几百倍。
. The 2nd layer is shaded during the figure. It's the identical aircraft-triangular construction; the atoms sit while in the holes formed by the very first layer. The primary layer has two equivalent sets of holes, nevertheless the atoms of the 2nd layer can occupy just one set. The third layer, labeled C
Orthorhombic: These are generally rhombic prisms and dipyramids that resemble tetragons but devoid of square cross-sections.
This Review chronicles in excess of twenty years of study into creating a genetic code for crystal engineering. Rather then directing biological procedures, this code uses synthetic forms of DNA to programme the assembly of nanoparticles and microparticles into 1D, 2D and 3D crystalline architectures, in which nearly just about every facet of the resultant structures might be systematically managed. Within just this conceptual framework, the structural and purposeful innovations Crystal are described in order to determine the present level of sophistication and to forecast long term directions with the System.
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