The smart Trick of Crystal That No One is Discussing
The smart Trick of Crystal That No One is Discussing
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诗中“胜美玉”，“过冰清”，写出水晶的质地美，而“亦欲应时明”则描绘出水晶充满灵性的动态美，耐人寻味。罗维是有独特眼光，懂得水晶真谛，第一个称赞水晶超过美玉的伟大诗人。他的认识已被千年之后的科学理论所证实；以水晶为直接吟咏对象的诗篇还有：
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。
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。
Fig. 7: A template-directed tactic can Handle the placement of building blocks on a floor within the development of elaborate structures.
2She was carrying a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
结晶�?When sea drinking water is permitted to evaporate, salt crystals are deposited. 海水蒸发后，盐的结晶体就沉淀下来。
⑩、雷射内雕：以计算机辅助激光设备在水晶对象中进行三维图案的成型，艺术效果好，可以任意表达各类图案，图形，达到逼真效果
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。
Crystals are sometimes viewed as something of huge magnificence, plus they are commonly used with diamonds or other stones to help make pieces of jewelry. Nearly all crystals now are man-made in laboratories.
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Within the Cambridge English Corpus We are saying the chain topology while in the substantial w location functions as the proverbial ' scratch-on-theglass ' needed inside the organic and natural chemistry laboratory to generate crystals. From your Cambridge English Corpus Continuous-pressure and temperature molecular-dynamics simulations of crystals from the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From your Cambridge English Corpus Together with these, dust particles happen to be noticed in low-temperature plasmas, like Those people Utilized in plasma processing and plasma crystals. Through the Cambridge English Corpus The final Component of the guide focuses on peculiarities of strongly coupled dusty plasmas, such as the formation of dust crystals and affiliated beautiful forces. From your Cambridge English Corpus Complete characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. In the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or maybe more irregular, Main morphologies were not noticed. From your Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from resources on the web. Any thoughts while in the examples do not symbolize the feeling from the Cambridge Dictionary editors or of Cambridge University Push or its licensors.
You'll find other minerals and molecules which will variety these crystal lattices. Snowflakes absolutely are a classic illustration of a approximately symmetric and geometrically patterned structure from ice crystals, and gemstones of all types are typically crystals.
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。
Yet another method of crystalline carbon is predicated on the molecule with sixty carbon atoms termed buckminsterfullerene (C60). The molecular form here is spherical. Each and every carbon is bonded to 3 neighbours, as in graphite, along with the spherical condition is reached by a mixture of 12 rings with five sides and 20 rings with six sides. Comparable constructions ended up very first visualized with the American architect R. Buckminster Fuller for geodesic domes.