27Local economists have seemed into their crystal balls and noticed one thing relatively nasty.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》
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结晶的形状非常细小,需要用显微镜才能看得清楚,外观上看起来是平滑、块状。常见最多的是各式玛瑙
The ordered inside construction of enormous crystals, similar to the fluorite and quartz proven listed here, is reflected in their geometric styles.
这种水晶观赏石特指水晶晶簇,它是众多单晶体集中生长在一起的晶体组合。晶簇以其晶莹剔透、独特造型而享誉水晶赏石界。
你们都知道,拿起一个水晶棱镜,让一束阳光通过它,就会得到一个光谱,看起来就像一条连续的彩虹色带。
石英:《广雅》称水晶叫石英,色白如莹者又叫白。为附的异形字。司马相如《子虚赋》就�?�?雌黄�?�?之句。苏林解释:�?�?,白石英�?”。
市场上有很多人把熔炼水晶也叫做合成水晶,那是不准确的,一般都是以水晶废料为原料在高温高压下熔炼出来的,而不是结晶成的,不具备水晶的晶体特性,所以不能把熔炼水晶与合成水晶混为一谈;但是熔炼水晶耐高温,用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等,实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
Q.four. Exactly what is the distinction between atomic framework and crystal construction? Ans. The primary difference between atomic structure and crystal construction lies in their definitions: atomic framework refers to how atoms are arranged in just a single molecule or a cluster of molecules, Whilst crystal composition considerations the precise arrangement Crystal of atoms in just a sound compound.
Crystals with clear flat faces are termed euhedral crystals, whilst These lacking defined faces are known as anhedral crystals. Crystals consisting of purchased arrays of atoms that aren't normally periodic are referred to as quasicrystals.
15The trick to a very good thermoelectric material is a crystal structure wherein electrons can move freely.制造一种好的热电材料的关键是,需要一种电子可以自由流动的晶体结构。
Orthorhombic: These are typically rhombic prisms and dipyramids that resemble tetragons but devoid of sq. cross-sections.
crystal, any strong content during which the element atoms are arranged within a definite pattern and whose surface regularity demonstrates its interior symmetry.
水晶观赏石是天然水晶中最具代表的作品,具有其他宝石都不具备的观赏性。不论是玉石翡翠还是都要经过雕琢后次能体现他的价值,而水晶观赏石只需要将表面进行抛光,即展现出晶体内所包裹的物质,直接欣赏原汁原味的水晶石。
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