This idea applies Similarly in a single, two, and a few-dimensional spaces. Your entire crystal lattice can be constructed by repeatedly reproducing the sample of your device cell in all Instructions.
Bismuth (Bi) appears being a steel, but the amount of electrons obtainable for electrical conduction is comparable to that of semiconductors. In actual fact, bismuth is named a semimetal. Molecular solids are frequently crystals shaped from molecules or polymers. They may be insulating, semiconducting, or metallic, with regards to the sort of molecules in the crystal. New molecules are repeatedly currently being synthesized, and many are made into crystals. The number of various crystals is big.
对水晶进行评价主要依据其颜色、透明度、大小、净度、特殊图案及是否有光学效应等方面。以颜色纯正，浓度较高，内部无瑕为好。种类上紫晶最贵，其次为黄晶、烟晶、无色水晶和芙蓉石。有特殊光学效应的水晶的价格更高。
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。
Crystalline structure is characterised by a geometric, repeating sample of symmetric molecular composition. The arrangement of atoms forms these purchased, repeating styles.
Lattices might have just one lattice stage per cell or multiple, yielding a total of 14 Bravais crystal lattice kinds. Bravais lattices, named for physicist and crystallographer Auguste Bravais, explain the three-dimensional array created by a list click here of discrete factors.
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1A crystal chandelier lit the place.一盏水晶吊灯照亮了房间。《柯林斯英汉双解大词典》
24I intend to make my which means crystal obvious.我想把我的意思解释得清清楚楚。《牛津词典》
⑤化学稳定�?非常好，在常温下仅溶解于氢氟酸，不溶解于其它各类酸、碱。在高温高压条件下可溶解于碳酸钠溶液中。
16I opened the box and observed a bit of crystal snowflake along with a greeting card with "Satisfied Birthday" inside the blank paper.我打开盒子并看见在白纸中有一片水晶雪花和一张写着“生日快乐”的贺卡。
You will discover only a few distinct unit-mobile shapes, so a variety of crystals share one device-cell variety. An important attribute of the unit cell is the number of atoms it incorporates. The whole range of atoms in all the crystal would be the amount in Each and every mobile multiplied by the number of unit cells. Copper and aluminum (Al) Every single have just one atom for every unit cell, when zinc (Zn) and sodium chloride have two. Most crystals have only a few atoms for each device cell, but there are several exceptions. Crystals of polymers, as an example, have Countless atoms in Every single unit mobile.
⑦双色水晶：一种紫色和黄色共存一体的水晶，紫色、黄色之间界限较明显，分别占据晶块的一部分。
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