5 Essential Elements For Crystal
5 Essential Elements For Crystal
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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。
23Sometimes, on the other hand, the crystal form of the silicate inclusions is noticed to resemble much more intently the internal composition of diamond than that of other silicate minerals.然而,有时观察到硅酸盐包裹体的晶体形态比其他硅酸盐矿物更接近金刚石的内部结构。
晶及其石英岩类玉石是中低档宝玉石,虽比不上钻石、红蓝宝石的高贵,但在加工中如果构思巧妙而且加工精细,同样具有很高的价值。如中国传统的玛瑙“虾盘”、“龙盘”、“水漫金山�?水胆玛瑙摆件)都被誉为国家级宝玉石。
养殖晶:养殖晶是指,用天然水晶做种子,然后赋予天然水晶生长的高压条件,养殖器中有富含二氧化硅的分子。然后二氧化硅分子围绕天然水晶种生长,这样的水晶成分(分子式)与天然水晶是一摸一样的,唯一有差别的是,这样的水晶磁场作用没有天然水晶强。
25If you're a Billy Crystal fan, you are going to appreciate this movie.如果你是比利·克里斯特尔的影迷,你就会喜欢这部电影。《柯林斯英汉双解大词典》
当二氧化硅结晶完美时就是水晶;结晶不完美的就是石英:二氧化硅胶化脱水后就是玛瑙;二氧化硅含水的胶体凝固后就成为蛋白石;二氧化硅晶粒小于几微米时,就组成玉髓、燧石、次生石英岩。
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损伤是指水晶由于加工或不小心摔掉、碰撞等原因,人为造成的损坏。它可以是破口,也可以是凹坑等。
24I need to make my which means crystal apparent.我想把我的意思解释得清清楚楚。《牛津词典》
A crystal system refers to the classification of crystals dependant on the geometric arrangement and symmetry in their lattice structures. You can find 7 main crystal systems:
In the Cambridge English Corpus We say the chain topology from the high w region functions since the proverbial ' scratch-on-theglass ' wanted during the organic and natural chemistry laboratory to generate crystals. Within the Cambridge English Corpus Continuous-pressure and temperature molecular-dynamics simulations of crystals of your lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within the Cambridge English Corpus Besides these, dust particles are noticed in low-temperature plasmas, like All those Utilized in plasma processing and plasma crystals. From the Cambridge English Corpus The final part of the reserve concentrates on peculiarities of strongly coupled dusty plasmas, such as the formation of dust crystals and affiliated beautiful forces. In the Cambridge English Corpus Finish characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From the Cambridge English Corpus Unbroken crystals are euhedral; rounded, or maybe more irregular, Main morphologies weren't observed. Within the Cambridge English Corpus See all samples of crystal These examples are from corpora and from sources on the internet. Any thoughts inside the examples usually do not signify the belief in here the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
国家还并未给天然水晶提供一个等级划分的具体标准,水晶品种繁杂,每一品种都有他不同的评判标准。
《古今小说·李公子救蛇获称心》:“器皿皆是玻璃、水晶、琥珀、玛瑙为之,曲尽巧妙,非人间所有。”
crystal Alteration is variable: absent in lots of crystals, in Other people developing dense sericite aggregates which may exhibit some recrystallization results to provide coarser-grained white mica. From the Cambridge English Corpus The tridymite crystals are rectangular or wedge-formed and are occasionally arranged in aggregates. In the Cambridge English Corpus Additionally, haloarchaeal cells had been embedded in just salt crystals underneath laboratory disorders and subsequently analysed by light-weight microscopy. Within the Cambridge English Corpus The white clouds (usually sparse) were being also greatly considered becoming composed of very small crystals of drinking water ice, instead like cirrus in our ambiance. From your Cambridge English Corpus They can be located in evaporite salt lakes and might be trapped in salt crystals throughout evaporation. Within the Cambridge English Corpus Thus, the cells (organelles and membranes) are destroyed mechanically by ice crystals, bringing about death by way of mobile lysis. In the Cambridge English Corpus The crystals ended up used in the 1st or next orders of reflection. From the Cambridge English Corpus Inside our 8xperiments, the crystals had been cubes that has a foundation spot of eight e mm. From the Cambridge English Corpus Vibration-assisted intermolecular hydrogen tunneling in photoreactive doped molecular crystals : effect of temperature and strain.