New Step by Step Map For Crystal
New Step by Step Map For 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。
对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。
Add to term list Incorporate to word list C2 [ U ] clear glass of very good quality, normally with its surface cut into delicate styles
Crystalline framework is characterised by a geometrical, repeating sample of symmetric molecular construction. The arrangement of atoms kinds these purchased, repeating styles.
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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：
②固体包裹体：指呈固态相存在包裹体，多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。
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幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。
With the Cambridge English Corpus We are saying the chain topology in the higher w location acts since the proverbial ' scratch-on-theglass ' required within the natural and organic chemistry laboratory to help make crystals. Within the Cambridge English Corpus Continual-strain and temperature molecular-dynamics simulations of crystals of your lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From your Cambridge English Corpus Together with these, dust particles have been noticed in lower-temperature plasmas, like All those Employed in plasma processing and plasma crystals. Through the Cambridge English Corpus The final Element of the e book concentrates on peculiarities of strongly coupled dusty plasmas, including the formation of dust crystals and affiliated website interesting forces. From your Cambridge English Corpus Entire characterization of damage threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, Principal morphologies were not observed. Within the Cambridge English Corpus See all samples of crystal These examples are from corpora and from sources on the internet. Any thoughts within the examples do not depict the opinion of your Cambridge Dictionary editors or of Cambridge College Push or its licensors.
隐晶类水晶外观是一块块的，不是成六角水晶簇状，但他们却也是属六方晶系的。但我们不能以肉眼观察到他们的六角形结晶，因为结晶的体积极为细小，需以显微镜协助下才能看到六角开结晶。而此类水晶非常平滑，因为结晶之间有“水化硅石”填补，玛瑙便属于此类。
玉石纹理如果能形成美丽的花纹、图案，其价格就高，如玛瑙内红白相间的色带有规律地排列，形成缠丝玛瑙时，碧玉中的不均匀颜色形成一种风景图案时，材料的价值将提高。当水晶内包裹体形成美丽的图案时，如幽灵水晶、风景水晶，或者针状包裹体呈束状排列时，其价值都高于普通的水晶。图案越美观、越有意境越好。
An additional method of crystalline carbon relies on the molecule with 60 carbon atoms called buckminsterfullerene (C60). The molecular shape is spherical. Every single carbon is bonded to 3 neighbours, as in graphite, as well as spherical form is obtained by a mixture of 12 rings with 5 sides and twenty rings with six sides. Very similar structures were 1st visualized through the American architect R. Buckminster Fuller for geodesic domes.