The Basic Principles Of Crystal
The Basic Principles Of Crystal
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27Local economists have appeared into their crystal balls and viewed a thing fairly terrible.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》
Bismuth (Bi) appears to be a metal, but the number of electrons available for electrical conduction is similar to that of semiconductors. In reality, bismuth is termed a semimetal. Molecular solids tend to be crystals shaped from molecules or polymers. They may be insulating, semiconducting, or metallic, depending on the kind of molecules from the crystal. New molecules are repeatedly staying synthesized, and plenty of are created into crystals. The number of different crystals is big.
一般而言，紫晶和黄晶是水晶中价值较高的品种。两者进一步的分级是据其颜色的深浅，颜色较深的为A级，稍浅的为B级。一般颜色较深的价格高，但要以不深暗为标准。颜色包括两种，一种是水晶本身的颜色，另一种是内部包裹体的颜色。水晶本身的颜色要艳丽、纯正，分布要均匀，不能太深或太浅，如澳州玉、蓝玉髓、紫晶、黄水晶，其价格就高。无色的水晶内含包裹体的颜色艳丽，其价格也高，如钛晶、绿幽灵、红兔毛。紫水晶一般以稍有云状物、颜色深紫、晶体通透的为上品。
Include to phrase list Include to phrase list C2 [ U ] transparent glass of really premium quality, generally with its surface Minimize into sensitive designs
根据美国已经了解的情况，统计局的专家和其他人口统计学家在他们的视野中提供了一个不可抗拒的水晶球。
⑧、雕刻：立体感强，工艺高，做工精细，成本高。分手工雕刻图形、机器雕刻文字。
Include to term listing Increase to phrase checklist [ C/U ] clear rock that looks like ice, or perhaps a piece of it
The weather are observed in many different crystal packing arrangements. The most common lattice buildings for metals are People received by stacking the atomic spheres into probably the most compact arrangement.
水晶常以晶簇、晶洞形式产出，其中水晶洞一般存在于由火山喷发而形成的巨厚熔岩流层的火成岩与玄武岩中。火山喷发时所含的气体或热水溶蚀等作用导致岩层中出现大量的孔隙，当富含硅质矿物的流体进入较薄的熔岩孔隙中，且温、压条件合适时将结晶沉淀出水晶等矿物。
英语-中文（简体） phrase #beta Beta /beta #preferredDictionaries ^picked name /chosen /preferredDictionaries
看孔眼：对于缀穿水晶制品（如项链、手链、佛珠），要看孔眼是否平直，孔的粗细是否均匀，有无细小裂纹。孔壁必须清澈透明，无“白痕”。
There are other minerals and molecules that can form these crystal lattices. Snowflakes really are a traditional illustration of a approximately symmetric and geometrically patterned composition from ice crystals, and gemstones of all kinds are typically crystals.
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。
crystal Alteration is variable: absent in lots of crystals, in others making dense sericite aggregates which may demonstrate some recrystallization outcomes to generate coarser-grained white mica. From your Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally organized in aggregates. In the Cambridge English Corpus Furthermore, haloarchaeal cells ended up embedded in just salt crystals less than laboratory conditions and subsequently analysed by mild microscopy. In the Cambridge English Corpus The white clouds (typically sparse) ended up also commonly considered to be being composed of small crystals of h2o ice, relatively like cirrus in our ambiance. With the Cambridge English Corpus They may be present in evaporite salt lakes and may be trapped in salt crystals throughout evaporation. Through the Cambridge English Corpus Consequently, the cells (organelles and membranes) are destroyed website mechanically by ice crystals, bringing about Demise through cell lysis. From your Cambridge English Corpus The crystals were Employed in the 1st or next orders of reflection. From the Cambridge English Corpus Inside our 8xperiments, the crystals ended up cubes using a foundation space of 8 e mm. Through the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : impact of temperature and strain.