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。
⒉棉、云雾或渣状包裹体、杂质在透明水晶内部有雾蒙蒙的现象或是感觉里面像有棉絮状、渣状物质一样的包裹体,这些包裹体的存在,影响水晶的整体美观。还有的水晶内局部含有黑斑或其他颜色的斑状物质,与水晶整体不协调,被视为水晶的杂质,有这种杂质的水晶是次品。
10This may be the silicon chip—a little bit chip of silicon crystal.这是硅芯片——一个硅晶体的小芯片。
第一种是“全包裹体”,在水晶结晶的时候把这些物质包裹在晶体里面,这类包裹体所形成的各种景象,大多保持了水晶结晶时的原状,也就是说保存了几亿年的原状,极少受到自然环境的影响。
C2 [ U ] transparent glass of really high-quality, typically with its floor Slash into fragile styles:
Wise Vocabulary: connected words and phrases Glass blower blowpipe bulletproof glass Minimize glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See extra final results » You can also uncover associated text, phrases, and synonyms during the subjects:
水晶的评价标准和高端宝石有所不同。多数高端宝石把颜色放在评价的第一位,而对水晶来说,颜色和净度(水晶行业称作晶体)是近乎同等重要的因素:
Ionic Crystals: Electrostatic forces kind ionic bonds. A basic illustration is actually a halite or salt crystal.
水晶包裹体丰富多彩,从气体、液体到各种矿物质,甚至宝石,均可被包含于水晶内,各种包裹体所形成的景象更是变化万千。按照包裹体的内容,常把包裹体水晶分为一下八类:
Crystals with obvious flat faces are called euhedral crystals, although All those missing outlined faces are known as anhedral crystals. Crystals consisting of purchased arrays of atoms that are not always periodic are identified as quasicrystals.
Within the Cambridge English Corpus We are saying the chain topology in the high w location functions as the proverbial ' scratch-on-theglass ' required during the natural chemistry laboratory to help make crystals. In the Cambridge English Corpus Consistent-tension and temperature molecular-dynamics simulations of crystals with the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within read more the Cambridge English Corpus In combination with these, dust particles happen to be noticed in very low-temperature plasmas, like These used in plasma processing and plasma crystals. From the Cambridge English Corpus The final Portion of the e book concentrates on peculiarities of strongly coupled dusty plasmas, like the development of dust crystals and associated beautiful forces. In the Cambridge English Corpus Entire characterization of harm threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. In the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or even more irregular, primary morphologies weren't observed. In the Cambridge English Corpus See all examples of crystal These examples are from corpora and from sources online. Any opinions while in the examples never represent the viewpoint of your Cambridge Dictionary editors or of Cambridge College Push or its licensors.
Crystallography could be the analyze of crystals, and it bargains with every little thing from great geometric styles to seemingly random conglomerations of particles and minerals.
crystal, any stable product by which the part atoms are organized in the definite sample and whose floor regularity reflects its internal symmetry.
Fig. five: The chance to realize defined crystal patterns is dependent on the symmetry engineering strategy.