Calcite crystals are frequently used in optical devices, and even the graphite in pencil direct are sheets of crystals that effectively crack apart layer by layer to jot down. Silica can form silicate crystals which happen to be The idea for quartz, mica, olivine, and a number of other crystals and minerals.

By clicking “Take All Cookies�? you agree to the storing of cookies with your machine to reinforce web-site navigation, examine site utilization, and support in our advertising attempts.

10This would be the silicon chip—a bit chip of silicon crystal.这是硅芯片——一个硅晶体的小芯片。

Most solid components present in character exist in polycrystalline kind rather than as an individual crystal. They are literally made up of countless grains (small crystals) packed jointly to fill all Room. Just about every particular person grain has a special orientation than its neighbours. Even though extensive-vary get exists in just one grain, on the boundary in between grains, the purchasing variations direction. A normal piece of iron or copper (Cu) is polycrystalline.

. These four structures comprise many of the binary crystals with equal quantities of cations and anions.

Monoclinic �?Characterised by a few unequal axes, two of which intersect at an oblique angle, though the third is perpendicular for the aircraft of the opposite two.

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：

26Some of the best consuming glasses are made out of direct crystal.一些最精致的酒杯是用铅晶质玻璃制成的。《柯林斯英汉双解大词典》

Lots of crystals behave like butter in that they are difficult at low temperatures but soft at greater temperatures. They can be identified as solids in the least temperatures beneath their melting position. A doable definition of the reliable is surely an object that retains its form if remaining undisturbed. The pertinent concern is how long the thing retains its condition. A really viscous fluid retains its condition for an hour but not a 12 months. A solid ought to hold its condition longer than that.

22Working from what America currently understands about alone, the bureau's professionals as well as other demographers supply an irresistible, if clouded, crystal ball amid their visions.

The basic models of solids are either more info atoms or atoms that have combined into molecules. The electrons of the atom shift in orbits that form a shell construction within the nucleus. The shells are stuffed in a systematic order, with Each and every shell accommodating only a little variety of electrons. Unique atoms have various figures of electrons, which might be distributed inside of a attribute electronic structure of crammed and partially crammed shells.

Crystal Lattices You will discover 7 methods of crystal buildings, which are also known as lattices or Area lattices:

水玉：中国最古老的称法叫水玉，意谓似水之玉，又说是 �?千年之冰所�?�?。唐代诗人温庭筠《题李处士幽居》写道：�?水玉簪头白角巾，瑶琴寂历拂轻�?”。水玉一词最早频繁出于《山海经》：�?又东三百里，日堂庭之�?…�?多水�?”；�?丹山出焉，东南流注于洛水，其中多水玉 ”；�?逐水出焉，北流注于渭，其中多水玉 ”。司马相如《上林赋》曰�?�?水玉磊河 �?。水晶得名水玉，古人是看�?�?其莹如水，其坚如�?�?的质地。

Inform us about this instance sentence: The term in the example sentence won't match the entry word. The sentence has offensive content material. Terminate Post Thanks! Your opinions is going to be reviewed. #verifyErrors message