水晶表面坑洼的地方,有的深,有的浅,这是水晶在成长过程中自然形成的,并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体,由于包裹体和水晶结合部位的结合力不强,当表面抛光时,矿体脱落,留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。
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。
人造水晶分为熔炼水晶与养殖晶:据水晶专家汪毅的阐述,随着水晶的价值提高,喜欢的人增多,水晶也引起了作伪者的兴趣,现阶段中国水晶市场常见的造假方法为:
Incorporate to term record Include to word listing C2 [ U ] transparent glass of very high quality, generally with its area Slice into sensitive designs
Crystalline structure is characterized by a geometrical, repeating pattern of symmetric molecular framework. The arrangement of atoms sorts these requested, repeating patterns.
Not all crystals form in h2o, but nearly all crystals form the identical way, atoms occur alongside one another and turn into a uniformed cluster. The process may take as tiny as a few days to maybe a thousand decades. Purely natural crystals that come from the Earth variety the identical way.
时尚的收藏爱好者喜欢收藏天然水晶,却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶:
1A crystal chandelier lit the room.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
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�?。
广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。
The essential units of solids are either atoms or atoms that have put together into molecules. The electrons of the atom go in orbits that kind a shell composition within the nucleus. The shells are loaded in a systematic buy, with each shell accommodating only a little amount of electrons. Diverse atoms have different figures of electrons, that happen to be distributed in a very characteristic electronic construction of crammed and partially filled shells.
的释�?浏览 cryptologist cryptology cryptorchidism cryptosporidium crystal crystal ball crystal obvious idiom copyright crystalline #randomImageQuizHook.filename #randomImageQuizHook.isQuiz 用我们的趣味配图小测验考考你的词汇量
水精:水晶为何称为水精,《广雅》有巧解:�?水之精灵�?”;李时珍则说:�?莹洁晶光,如水之精英 ”。细加考究,此称还蕴含浓厚的宗教意味呢。水精一名,最初见于佛书,后汉支曜翻译的《具光明定意经》说:�?其所行道,色如水�?�?。
The C60 molecules, also known as buckyballs, are rather strong and Virtually incompressible. Crystals are fashioned this sort of which the balls are organized within an fcc lattice by using a one particular-nanometre spacing between the centres of adjacent balls. The identical C70 molecule has the shape of the rugby ball; C70 molecules also kind an fcc crystal when stacked alongside one another. The solid fullerenes type molecular crystals, with weak binding—supplied more info by van der Waals interactions—amongst the molecules.