Fascination About Crystal
Fascination About Crystal
Blog Article
天然的水晶一般都会有絮状（绵绺），也就是大家俗称的瑕疵，这是液体水落石出和二氧化碳的小孔穴，而人工合成的水晶就不会有这样的特征。
①压电效�?在机械力(压力或拉�?作用下，水晶单晶体的两端会产生电荷，其电量相等但符号相反。在工业上，无色、无缺陷、不具双晶的水晶常被用来作压电石英片。
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 sort prisms and double pyramids. The composition is like a cubic crystal, other than a person axis is more time than the other.
2She was sporting a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
Lattices could have 1 lattice issue for every cell or multiple, yielding a complete of 14 Bravais crystal lattice styles. Bravais lattices, named for physicist and crystallographer Auguste Bravais, describe the a few-dimensional array produced by a set of discrete points.
根据包裹体和主晶宝石之间形成的先后关系可将水晶的包裹体划分以下三种类�?
Crystals are almost nothing in excess of an ordered arrangement of molecules or atoms. Crystals are available in numerous sizes and styles, and every one has unique features. The things they are created of determines how it is going to kind.
Metallic Crystals: Metals generally kind metallic crystals, wherever a lot of the valence electrons are free to maneuver all over the lattice. Iron, as an example, can type distinct metallic crystals.
多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。
⑥、丝印：水晶表面附有不同的色料进行效果处理，颜色层面较厚，着力后方可脱落。
You will find only a few distinctive unit-cell styles, so a number of crystals share an individual device-mobile style. A crucial attribute of the unit cell is the quantity of atoms it contains. The entire amount of atoms in the whole crystal is definitely the range in each mobile multiplied by the number of unit cells. Copper and aluminum (Al) Each and every have a person atom per device cell, though zinc (Zn) and sodium chloride have two. Most Crystal crystals have only some atoms per unit mobile, but there are several exceptions. Crystals of polymers, by way of example, have A large number of atoms in each device mobile.
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
crystal Alteration is variable: absent in lots of crystals, in Other individuals creating dense sericite aggregates which can display some recrystallization outcomes to generate coarser-grained white mica. From the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. Through the Cambridge English Corpus Moreover, haloarchaeal cells ended up embedded in salt crystals beneath laboratory conditions and subsequently analysed by light-weight microscopy. Through the Cambridge English Corpus The white clouds (ordinarily sparse) were being also broadly considered being made up of very small crystals of water ice, alternatively like cirrus within our ambiance. With the Cambridge English Corpus They may be found in evaporite salt lakes and can be trapped in salt crystals during evaporation. Within the Cambridge English Corpus For that reason, the cells (organelles and membranes) are destroyed mechanically by ice crystals, resulting in Dying by way of cell lysis. From the Cambridge English Corpus The crystals were Utilized in the first or next orders of reflection. Within the Cambridge English Corpus Inside our 8xperiments, the crystals have been cubes using a foundation space of eight e mm. In the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : impact of temperature and stress.