The smart Trick of Crystal That No One is Discussing
The smart Trick of Crystal That No One is Discussing
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看颜色：即使在同一种类的水晶中，它的不同部位的纹理、色泽也各式各有千秋。属于单色的，要色度均匀；在同一块水晶上有深浅的，则要求其色调纹路美观大方。
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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。
The requested inner framework of enormous crystals, just like the fluorite and quartz demonstrated here, is mirrored within their geometric styles.
Crystalline composition is characterized by a geometrical, repeating sample of symmetric molecular construction. The arrangement of atoms varieties these requested, repeating designs.
These illustrations are from corpora and from sources online. Any thoughts from the examples don't stand for the impression from the Cambridge Dictionary editors or of Cambridge College Press or its licensors.
Crystals look one of a kind from many other rocks and minerals, but �?barring a few Specific conditions �?nearly all minerals cover a crystalline composition beneath the area.
You will find there's comparable directive about crystal glass which differentiates concerning total guide crystal, guide crystal and crystal.
包裹体常见有固相、固液气三相组合、空洞以及双晶、色带等。水晶中典型的同生包裹体有自形的锐钛矿、气液两相包体等。
crystal The newly crystallized quartz grains are characterized by elongate crystals oriented oblique on the shear band margins, defining a standard grain-condition foliation. 来自 Cambridge English Corpus We say the chain topology from the higher w region acts as being the proverbial ' scratch-on-theglass ' necessary while in the natural and organic chemistry laboratory to generate crystals. 来自 Cambridge English Corpus The age scatter between the person crystals may possibly reflect incorporation of xenocrysts from before magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene types neutral to pale brown, subhedral to anhedral crystals, from time to time that contains inclusions of plagioclase microlaths and opaque phases.
The essential units of solids are possibly atoms or atoms which have merged into molecules. The electrons of an atom transfer in orbits that form a shell structure round the nucleus. The shells are stuffed in a scientific purchase, with Each individual shell accommodating only a small range of electrons. Distinct atoms have different quantities of electrons, which are dispersed in the characteristic electronic structure of stuffed and partially filled shells.
水晶形成后由于外力作用或某种人为原因使水晶产生大的裂隙或裂纹，这种裂纹有大有小，对水晶的影响也有大小之分。
水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。
crystal Alteration is variable: absent in several crystals, in Other individuals creating dense sericite aggregates which can display some recrystallization effects to supply coarser-grained white mica. With the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are sometimes arranged in aggregates. From the Cambridge English Corpus Also, haloarchaeal cells were embedded inside salt crystals below laboratory situations and subsequently analysed by gentle microscopy. From the Cambridge English Corpus The white clouds (generally sparse) were also broadly thought to be becoming made up of very small crystals of h2o ice, relatively like cirrus within our ambiance. From the Cambridge English Corpus They are really found in evaporite salt lakes and might be trapped in salt crystals through evaporation. From the Cambridge English Corpus As a result, the cells (organelles and membranes) are wrecked mechanically by ice crystals, resulting in Dying as a result of mobile lysis. With the Cambridge English Corpus The crystals were being Employed in the 1st or next orders of reflection. here Through the Cambridge English Corpus Within our 8xperiments, the crystals were cubes which has a foundation space of 8 e mm. From your Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : result of temperature and strain.