Not known Factual Statements About Crystal
Not known Factual Statements About Crystal
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27Local economists have appeared into their crystal balls and seen anything somewhat awful.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。
晶及其石英岩类玉石是中低档宝玉石，虽比不上钻石、红蓝宝石的高贵，但在加工中如果构思巧妙而且加工精细，同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
Tetragonal: These crystals form prisms and double pyramids. The construction is like a cubic crystal, except one particular axis is extended than another.
这种水晶观赏石特指水晶晶簇，它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
These illustrations are from corpora and from sources on the internet. Any viewpoints in the examples don't depict the impression with the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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
Hexagonal �?Characterised by 4 axes, a few of which are equal in duration and intersect at one hundred twenty levels, having a fourth axis perpendicular to one other a few.
Metallic Crystals: Metals normally variety metallic crystals, in which a few of the valence electrons are absolutely free to move throughout the lattice. Iron, for instance, can sort distinct metallic crystals.
crystal The newly crystallized quartz grains are characterized by elongate crystals oriented oblique for the shear band margins, defining a typical grain-shape foliation. 来自 Cambridge English Corpus We say the chain topology in the large w location acts because the proverbial ' scratch-on-theglass ' necessary while in the natural chemistry laboratory to generate crystals. 来自 Cambridge English Corpus The age scatter among the individual crystals may mirror incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene sorts neutral to pale brown, subhedral to anhedral crystals, sometimes containing inclusions of plagioclase microlaths and opaque phases.
15The trick to a great thermoelectric content is really a crystal construction wherein electrons can stream freely.制造一种好的热电材料的关键是，需要一种电子可以自由流动的晶体结构。
正常的水晶在生长时，多可以发现和柱形尖端棱线平行的生长纹（advancement lines）。由于在地底、岩洞中的生长空间多狭窄，尤其在遇到地震时，或地壳变动时，甚至容易遭到其他矿石的挤压，常常会压迫产生不同的「晶面」。还有，当水晶还是在液态状的时候，常常也会包覆着其他的矿石、泥灰一起结晶成长，如金红石（稍后变成发晶）、火山泥灰（稍后变成幻影水晶）等等。所有的这些，都是「自然的一部分」，请不要视为「瑕疵」。
水精：水晶为何称为水精，《广雅》有巧解：�?水之精灵�?”；李时珍则说：�?莹洁晶光，如水之精英 ”。细加考究，此称还蕴含浓厚的宗教意味呢。水精一名，最初见于佛书，后汉支曜翻译的《具光明定意经》说：�?其所行道，色如水�?�?。
Binary crystals are present in numerous constructions. Some pairs of aspects kind more than one structure. At area temperature, cadmium sulfide could crystallize possibly during the zinc blende click here or wurtzite structure. Alumina also has two probable structures at room temperature, α-alumina (corundum) and β-alumina. Other binary crystals show distinctive buildings at distinctive temperatures. Among the most elaborate crystals are These of silicon dioxide (SiO2), which has seven distinctive buildings at several temperatures and pressures; the commonest of such buildings is quartz.