The Basic Principles Of Crystal

The Basic Principles Of Crystal

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8Where can we get this magic wand and crystal ball?我们到哪里获得这种魔棒和水晶玻璃球？

杂质、裂纹越少越好。质地好的水晶制品，应看不到星点状、云雾状和絮状分布的气液包裹体或组成玉石的颗粒。有裂纹、斑点，则属于次品。

These innovations consist of unique constructions with programmable lattice symmetries and very well-outlined crystal habits, responsive elements that leverage the intrinsic Qualities of nucleic acids to govern buildings on desire, nanoparticle superlattices grown epitaxially from surfaces and colloidal crystals that supply insights into light-weight–matter interactions. On the lookout ahead, we obstacle the Group to leverage the amazing structural Command afforded by crystal engineering with DNA to synthesize classes of purposeful components that push over and above what has been feasible with Obviously occurring crystalline components or All those produced by extra standard procedures.

Significant crystals of diamond are worthwhile gemstones. The crystal has other fascinating Qualities; it's the best seem velocity of any stable and is the greatest conductor of heat. Besides diamond, the other popular sort of carbon is graphite, which happens to be a layered material. Every single carbon atom has three coplanar in close proximity to neighbours, forming an arrangement called the honeycomb lattice. Three-dimensional graphite crystals are received by stacking related layers.

. These 4 constructions comprise many of the binary crystals with equivalent numbers of cations and anions.

These examples are from corpora and from sources on the web. Any viewpoints from the examples never symbolize the belief on the Cambridge Dictionary editors or of Cambridge College Press or its licensors.

解理：无解理。所谓解理是指矿物被打击时，沿一定方向有规则地裂开形成光滑平面的性质。根据解理的程度可以分为五类：极完全解理、完全解理、中等解理、不完全解理和无解理，水晶属于无解理。

Crystals are nothing more than an purchased arrangement of molecules or atoms. Crystals are available in many different styles and sizes, and each one has various attributes. What they are created of determines how it'll sort.

Metallic Crystals: Metals generally kind metallic crystals, in which many of the valence electrons are totally free to maneuver throughout the lattice. Iron, for instance, can sort unique metallic crystals.

crystal The freshly crystallized quartz grains check here are characterized by elongate crystals oriented oblique to the shear band margins, defining a standard grain-form foliation. 来自 Cambridge English Corpus We say the chain topology from the superior w location acts because the proverbial ' scratch-on-theglass ' needed during the organic and natural chemistry laboratory to produce crystals. 来自 Cambridge English Corpus The age scatter among the individual crystals could mirror incorporation of xenocrysts from previously magmatic pulses or protoliths. 来自 Cambridge English Corpus The clinopyroxene varieties neutral to pale brown, subhedral to anhedral crystals, at times containing inclusions of plagioclase microlaths and opaque phases.

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Crystal Lattices There are seven programs of crystal constructions, which happen to be also referred to as lattices or Area lattices:

在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。

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