Crystal Secrets
Crystal Secrets
Blog Article
轴性、光性：一轴晶正光性。正交偏光下所看到的一轴晶干涉图是独特的，其黑十字臂未达中心，形成中空的图案，俗称牛眼干涉图。中心部分通常为淡绿色或淡粉色。
按照透明度指标，水晶越透明，价格越高，好的透明的水晶加工出的成品晶莹剔透、光辉耀眼。透明度高的水晶能提升颜色的艳丽，否则显得呆板无灵性。光学水晶要求全透明、无双晶、无杂质。工艺水晶要求透明、少裂、少瑕疵。熔炼水晶要求透明，可有较多裂纹。三者价值依次降低，熔炼水晶只能作为熔炼水晶玻璃的原料。在工艺水晶中，晶体较大的，可用来做水晶眼镜和雕刻高档工艺品，因而价格较高。
A crystal composition concentrates on how the atoms are arranged inside the crystal. On the other hand, crystallographers are interested in the general shape and dimension from the crystal as well as its exterior qualities. To perform this, they need to know about the crystal technique.
③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。
2She was wearing a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
, has the same framework, but There are 2 selections for selecting the holes the atoms will occupy. The 3rd layer is usually put above the atoms of the main layer, producing an alternate layer sequence A
Increase to term record Incorporate to phrase checklist [ C/U ] transparent rock that looks like ice, or a bit of it
如果水晶内部杂质中有传说中人物的造型，如佛、星座、生肖等价值可能要高于同等颜色和净度的水晶。
Crystals are frequently seen as anything of immense beauty, they usually are generally made use of with diamonds or other stones to generate pieces of jewellery. Nearly all of crystals now are person-manufactured in laboratories.
Solids that have short-range get but lack extended-assortment order are termed amorphous. Nearly any product can be created amorphous by immediate solidification in the melt (molten state). This situation is unstable, as well as the stable will crystallize in time. If your timescale for crystallization is yrs, then the amorphous state appears stable.
All crystal ball crystal crystal clear copyright liquid crystal crystal lattice crystal construction liquid crystal Display screen See all meanings Idioms and phrases crystal apparent idiom
Molecular Crystals: Complete molecules are bonded to one another in an structured manner. A very good case in point can be a sugar crystal, which includes sucrose molecules.
14For case in point, We've got Quartz crystal clocks and watches exact to inside of just one minute a calendar year.例如，我们使用的每年误差不超过one分钟的石英水晶钟表和手表。
Binary crystals are found in a lot of buildings. Some pairs of components type more than one structure. At area temperature, cadmium sulfide may possibly crystallize both during the zinc blende or wurtzite composition. Alumina also has two probable constructions at room temperature, α-alumina (corundum) and β-alumina. Other binary crystals exhibit different structures at unique temperatures. One of the most intricate crystals are Individuals of silicon check here dioxide (SiO2), that has seven distinct structures at numerous temperatures and pressures; the commonest of such structures is quartz.