The Greatest Guide To Crystal
The Greatest Guide To Crystal
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水晶表面坑洼的地方，有的深，有的浅，这是水晶在成长过程中自然形成的，并非是人为造成的损伤。缺陷位置本来包有其他矿物晶体，由于包裹体和水晶结合部位的结合力不强，当表面抛光时，矿体脱落，留下空位。这种缺陷在绿幽灵、钛晶、金发晶上都比较常见。
A elementary strategy in crystal constructions could be the unit mobile. It's the smallest unit of quantity that allows identical cells for being arranged together to occupy all obtainable House. The geometrical foundation of all crystals would be the lattice. A lattice can be seen as a regular and infinite arrangement of details or atoms, exactly where Each individual stage or atom has an identical bordering atmosphere.
A essential concept in crystal buildings may be the device mobile. It is the smallest device of quantity that permits equivalent cells to become stacked collectively to fill all House. By repeating the pattern from the device cell over and over in all Instructions, your complete crystal lattice is often manufactured. A dice is the simplest illustration of a unit cell. Two other illustrations are demonstrated in Determine one. The initial is the device cell for your deal with-centred cubic lattice, and the 2nd is for your entire body-centred cubic lattice. These buildings are stated in the next paragraphs.
In order to see how crystals are formed, you can do a little venture in the pretty individual kitchen and see the formation of the crystals take place along with your individual eyes . This can be done by putting a little degree of table salt into some standard faucet water, wait around 24 hours, and you may see pleasant cubed formations. This comes about since the drinking water is evaporating, which will cause the atoms which make up the salt (the mineral) plus the water to come nearer with each other.
25If you're a Billy Crystal supporter, you can adore 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》
Good Vocabulary: connected text and phrases Glass blower blowpipe bulletproof glass Lower glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See much more final results » It's also possible to discover related phrases, phrases, and synonyms in the matters:
30Three times went earlier, and I was stunned to check out it once more: all of the openings were sewed up by thin and white thread and they looked such as ice crystal on Winter season's branches inside the north.
26Some of the best consuming glasses are created from 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》
本词条由中国科学院大学地球与行星科学学院、中国科学院地质与地球物理研究所 参与编辑并审核，经科普中国·科学百科认�?。
幽灵水晶，分绿幽灵，红幽灵，白幽灵等，主要组成为绿泥石，其中绿幽灵属于珍贵品种。
16I opened the box and saw a piece of crystal snowflake in addition to a greeting card with "Content 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。
There are other minerals and molecules which can form these crystal lattices. Snowflakes are a vintage example of a about symmetric and geometrically get more info patterned structure from ice crystals, and gemstones of all kinds are generally crystals.
⑨、喷砂：立体感弱，较平整，无凹凸感，机器雕刻文字、图形等后进行效果处理。成本低制作快。
对于紫水晶黄水晶这样的单色水晶，通常要观察它的二色性，即使是最顶级的紫水晶黄水晶也是有色差的，通过这个方法可以鉴别是否加色。