5 Easy Facts About Crystal Described
5 Easy Facts About Crystal Described
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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。
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。
4Without a crystal ball, It really is difficult to say where by we'll be future yr.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》
看原料:选料精良的水晶制品,应看不到胶口及棉絮;质地纯净、光润、晶莹为好。
2She was donning a strand of crystal beads.她戴着一串水晶珠子。《柯林斯英汉双解大词典》
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。
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。
②固体包裹体:指呈固态相存在包裹体,多因岩浆、热液、变质作用等形成的早期结晶物被水晶捕获而形成。
本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核,经科普中国·科学百科认�?。
Crystals with noticeable flat faces are termed euhedral crystals, although Those people missing defined faces are named anhedral crystals. Crystals consisting of purchased arrays of atoms that aren't often periodic are termed quasicrystals.
All crystal ball crystal distinct copyright liquid crystal crystal lattice crystal composition liquid crystal Display screen See all meanings Idioms and phrases crystal apparent idiom
Orthorhombic: These are typically rhombic prisms and dipyramids that resemble website tetragons but without having square cross-sections.
crystal, any reliable materials by which the component atoms are arranged inside of a definite sample and whose area regularity displays its inner symmetry.
Intelligent Vocabulary: relevant terms 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 extra final results » You can even discover associated phrases, phrases, and synonyms inside the matters: