27Local economists have seemed into their crystal balls and seen anything somewhat 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》

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。

4Without a crystal ball, It can be unachievable to state exactly where we will be upcoming 12 months.不用水晶球预卜未来，我们说不准明年处境如何呀。《牛津词典》

水碧：《山海经》中，水晶又被称作水碧： �?又南三百里，日耿山，无草木，多水碧 �?，郭璞注�?�?亦水玉类 ”。这种称谓常被文人所引用，晋代郭景纯《璞江赋》道�?�?鬼，水碧�?�?。水晶又有人称它叫玉瑛。《符瑞图》载�?美石似玉，水精谓之玉瑛也�?”

Crystalline composition is characterized by a geometrical, repeating pattern of symmetric molecular framework. The arrangement of atoms types these purchased, repeating styles.

Lattices could possibly have a single lattice place per mobile or multiple, yielding a total of 14 Bravais crystal lattice sorts. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the a few-dimensional array made by a set of discrete points.

光泽：玻璃光泽。断口处为油脂光泽。光泽，指宝石表面对光线反射的一种光学性质。观察水晶的光泽，可用手握着它，以灯光或窗户投进来的光线看表面反射，透明水晶亮度与光泽强弱有关。

26Some of the finest drinking glasses are comprised of guide crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》

Numerous crystals behave like butter in that they're difficult at lower temperatures but soft at better temperatures. They are known as solids in the least temperatures down below their melting place. A achievable definition of a good is definitely an object that retains its condition if left undisturbed. The pertinent challenge is how long the item keeps its form. A really viscous fluid retains its form for an hour or so but not a yr. A strong ought to preserve its condition longer than that.

Solids which have limited-assortment purchase but absence lengthy-vary order are referred to as amorphous. Just about any substance is often built amorphous by quick solidification within the soften (molten point out). This situation is unstable, along with the reliable will crystallize in time. In case the timescale for crystallization is several years, then the amorphous state seems steady.

There are two this sort of attainable periodic preparations. In Just about every, the initial layer has the atoms packed into a aircraft-triangular lattice in which each atom here has 6 quick neighbours. Determine two shows this arrangement with the atoms labeled A

Crystallography may be the analyze of crystals, and it discounts with everything from excellent geometric styles to seemingly random conglomerations of particles and minerals.

⑤、打孔：是在水晶成品未完成前，根据其所需打孔之尺寸及位置，以钻头加工，如制表件、笔筒、瓶孔等。

Intelligent Vocabulary: connected words and phrases and phrases Geology: mineralogy beneficiation crystalline deposit gemologist gemology gold dust graphite idiomorphic intercrystalline like gold dust idiom magnesium mineral nugget pyrite quasicrystal seam silicon unmined vermiculite vulcanicity See a lot more results » You can also come across relevant phrases, phrases, and synonyms inside the subject areas: