The Basic Principles Of Crystal

The Basic Principles Of Crystal

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27Local economists have seemed into their crystal balls and seen anything somewhat terrible.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。

人造水晶分为熔炼水晶与养殖晶：据水晶专家汪毅的阐述，随着水晶的价值提高，喜欢的人增多，水晶也引起了作伪者的兴趣，现阶段中国水晶市场常见的造假方法为：

Fig. 3: A library of lattice symmetries can be accessed by altering the particle Main and DNA shell.

You will also find many products that resemble crystals but are actually polycrystals. Polycrystals kind when microscopic crystals fuse alongside one another to kind a solid. These supplies do not include requested lattices.

Good Vocabulary: relevant phrases and phrases Glass blower blowpipe bulletproof glass Slash glass fibreglass frosted glassware glaze glazed glazier glazing prism prismatic punty Pyrex reglaze unglazed vitreous vitrification vitrify See far more effects » You can also locate similar words and phrases, phrases, and synonyms during the topics:

Crystals glimpse unique from many other rocks and minerals, but �?barring a handful of Exclusive instances �?almost all minerals hide a crystalline composition beneath the surface.

损伤是指水晶由于加工或不小心摔掉、碰撞等原因，人为造成的损坏。它可以是破口，也可以是凹坑等。

Crystals in many cases are viewed as something of enormous natural beauty, they usually are generally utilised with diamonds or other stones to website generate pieces of jewelry. Many crystals now are person-made in laboratories.

广义的包裹体是指宝石内部含有的与主晶宝石化学成分、物理性质等不同的物质。

天然性是水晶观赏石的基本特性。通常整体造型水晶矿物不饰雕琢就具备很高的观赏价值，但是包裹体水晶观赏石经常需要适当打磨抛光，这样更方便观赏水晶内部的包裹体。

You will discover other minerals and molecules which can kind these crystal lattices. Snowflakes certainly are a traditional illustration of a about symmetric and geometrically patterned construction from ice crystals, and gemstones of all versions are typically crystals.

Crystals are classified usually categories, for example insulators, metals, semiconductors, and molecular solids. One crystal of the insulator is generally clear and resembles a piece of glass. Metals are shiny Except if they may have rusted. Semiconductors are occasionally shiny and occasionally clear but are never ever rusty. Quite a few crystals can be categorised as only one style of reliable, while some have intermediate behaviour. Cadmium sulfide (CdS) may be well prepared in pure form and is a superb insulator; when impurities are included to cadmium sulfide, it gets to be an interesting semiconductor.

⑥白色的包裹体有蚀变的绿泥石、云母、愈合裂隙、水晶、方解石、透闪石等。