27Local economists have appeared into their crystal balls and found a thing instead nasty.当地的经济学者们已预测到将会出现棘手的问题。《柯林斯英汉双解大词典》
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。
A standard principle in crystal constructions would be the device cell. It is the smallest unit of volume that allows equivalent cells to generally be stacked alongside one another to fill all Place. By repeating the pattern in the device mobile time and again in all directions, the complete crystal lattice could be built. A cube is The best example of a unit mobile. Two other illustrations are revealed in Determine 1. The very first could be the unit mobile for the encounter-centred cubic lattice, and the 2nd is to get a human body-centred cubic lattice. These buildings are described in the following paragraphs.
We have composed about about three hundred stones in the mineral kingdom! Examine Just about every stone's exceptional origin, heritage, and energies below.
How Crystals Sort The whole process of forming a crystal known as crystallization. Crystallization generally happens every time a reliable crystal grows from a liquid or Alternative.
Lattices could possibly have 1 lattice level for each mobile or more than one, yielding a complete of fourteen Bravais crystal lattice kinds. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the 3-dimensional array made by a list of discrete details.
Incorporate to phrase record Incorporate to phrase list [ C/U ] clear rock that appears like ice, or simply a bit of it
市场上有很多人把熔炼水晶也叫做合成水晶，那是不准确的，一般都是以水晶废料为原料在高温高压下熔炼出来的，而不是结晶成的，不具备水晶的晶体特性，所以不能把熔炼水晶与合成水晶混为一谈；但是熔炼水晶耐高温，用优质二氧化硅熔炼成的熔炼水晶可以做成实用产品比如水晶杯、烤盘、茶具等，实际上一代伟人毛泽东主席的水晶棺就是选用东海优质水晶熔炼而成的。
Many crystals behave like butter in that they are tough at small temperatures but smooth at higher temperatures. These are referred to as solids at all temperatures under their melting place. A achievable definition of the strong is really an item that retains its form if remaining undisturbed. The pertinent problem is just how long the item keeps its condition. A really viscous fluid retains its form for one hour although not a yr. A good should keep its condition for a longer period than that.
The definition of the sound seems clear; a good is generally thought of as staying challenging and agency. On inspection, even so, the definition results in being fewer straightforward. A dice of butter, for example, is hard right after getting stored inside of a fridge and is also Plainly a solid. Immediately after remaining on the kitchen counter for per day, the identical dice becomes fairly comfortable, and it truly is unclear In the event the butter should really nonetheless be deemed a reliable.
From your Cambridge English Corpus We are saying the chain topology within the superior w region functions since the proverbial ' scratch-on-theglass ' essential during the natural chemistry laboratory to generate crystals. With the Cambridge English Corpus Regular-stress and temperature molecular-dynamics simulations of crystals on the lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. From the Cambridge English Corpus Along with these, dust particles have been observed in lower-temperature plasmas, like Those people used in plasma processing and plasma crystals. In the Cambridge English Corpus The ultimate Portion of the book focuses on peculiarities of strongly coupled dusty plasmas, including the development of dust crystals and connected attractive forces. Within the Cambridge English Corpus Comprehensive characterization of injury threshold in titanium doped sapphire crystals with nanosecond, picosecond, and femtosecond laser pulses. From your Cambridge English Corpus Unbroken crystals are euhedral; rounded, or more irregular, Main morphologies weren't observed. With the Cambridge English Corpus read more See all samples of crystal These examples are from corpora and from sources online. Any thoughts in the illustrations usually do not symbolize the opinion from the Cambridge Dictionary editors or of Cambridge College Push or its licensors.
Crystallography could be the study of crystals, and it promotions with anything from ideal geometric shapes to seemingly random conglomerations of particles and minerals.
在透明的水晶中，隐裂纹呈亮晶晶的片状，有时还会有晕彩效应。这些裂纹是水晶在生长过程中，遇到外力挤压而在内部产生的一些隐形裂纹，隐裂纹在芙蓉石、紫水晶、白水晶球及白水晶柱中都很常见。有的裂纹后来被物质填充，形成愈合的裂纹，也就是原来的裂纹又长住了。这种裂纹对水晶的影响相对要小一些。
矿物成分：针铁矿、赤铁矿、金红石、磁铁矿、电气石、石榴石、云母、绿泥石等形成了包裹体水晶，如发晶、钛晶、绿幽灵等，发晶中则含有肉眼可见的似头发状的针状矿物的包裹体形成。含锰和铁者称紫水晶；含铁�?；呈金黄色或柠檬�?)称黄水晶；含锰和钛呈玫瑰色者称蔷薇石英，即粉水晶；烟色者称烟水晶；褐色者称茶晶；黑色透明者称为墨晶。