27Local economists have looked into their crystal balls and found something somewhat 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》

12He tried once again in a number of other cities and succeeded with Crystal Caramels.他又在其他几个城市再次尝试，并成功制出了水晶焦糖。

A basic thought in crystal structures would be the unit mobile. It's the smallest device of quantity that allows identical cells to generally be stacked jointly to fill all Place. By repeating the sample in the unit cell repeatedly in all Instructions, your entire crystal lattice could be made. A cube is The only example of a device cell. Two other examples are demonstrated in Figure 1. The initial could be the unit mobile for a face-centred cubic lattice, and the 2nd is for just a body-centred cubic lattice. These buildings are described in the following paragraphs.

Most strong supplies present in nature exist in polycrystalline type in lieu of as one crystal. They are literally made up of a lot of grains (smaller crystals) packed with each other to fill all House. Each and every individual grain has a different orientation than its neighbours. Whilst lengthy-range order exists inside just one grain, on the boundary involving grains, the ordering adjustments path. An average bit of iron or copper (Cu) is polycrystalline.

Crystalline construction is characterised by a geometrical, repeating sample of symmetric molecular structure. The arrangement of atoms kinds these ordered, repeating patterns.

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对任何宝石来说，颜色都是非常重要的，水晶也不例外。如果是水晶晶体是有颜色的，如粉水晶、黄水晶、紫水晶等，其颜色评价的最高标准则是明艳动人，不带有灰色、黑色、褐色等其他色调。如粉水晶，颜色以粉红为佳；紫水晶，要求颜色为鲜紫，纯净不发黑；黄水晶，要求颜色不含绿色、柠檬色调，以金橘色为佳。对于发晶来说，晶体的颜色也是很重要的。相同发丝的金发晶，晶体完全无色（白水晶）和晶体略偏茶色，肉眼的视觉观感也是有差别的，所以前者的价格会高于后者。

Crystals is often grown beneath average conditions from all ninety two In a natural way occurring features apart from helium, and helium may be crystallized at very low temperatures by making use of 25 atmospheres of strain.

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Crystals with obvious flat faces are identified as euhedral crystals, when All those missing defined faces are called anhedral crystals. Crystals consisting of purchased arrays of atoms that aren't constantly periodic are termed quasicrystals.

Within the Cambridge English Corpus We say the chain topology during the high w region functions since the proverbial ' scratch-on-theglass ' essential during the organic chemistry laboratory to help make crystals. In the Cambridge English Corpus Continual-force and temperature molecular-dynamics simulations of crystals of your lecithin fragments - glycerylphosphorylcholine and dilauroylglycerol. Within the Cambridge English Corpus Along with these, dust particles have already been noticed in very low-temperature plasmas, like People used in plasma processing and plasma crystals. In the Cambridge English Corpus The ultimate Portion of the reserve focuses on peculiarities of strongly coupled dusty plasmas, including the development of dust crystals and affiliated interesting forces. From your 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 more irregular, Major morphologies weren't noticed. Within the Cambridge English Corpus See all samples of crystal These illustrations are from corpora and from resources on the web. Any views while in the illustrations do not depict the more info feeling on the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

There are actually other minerals and molecules which can sort these crystal lattices. Snowflakes can be a basic example of a roughly symmetric and geometrically patterned structure from ice crystals, and gemstones of all types are generally crystals.

Crystals are categorised on the whole types, including insulators, metals, semiconductors, and molecular solids. One crystal of the insulator is normally clear and resembles a bit of glass. Metals are shiny Unless of course they have rusted. Semiconductors are occasionally shiny and from time to time transparent but are hardly ever rusty. Many crystals might be categorised as a single variety of solid, while some have intermediate behaviour. Cadmium sulfide (CdS) could be ready in pure kind and is an excellent insulator; when impurities are added to cadmium sulfide, it gets a fascinating semiconductor.

Fig. 5: The ability to realize described crystal patterns is depending on the symmetry engineering strategy.