The Definitive Guide to Crystal

The Definitive Guide to Crystal

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27Local economists have looked into their crystal balls and viewed something rather 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》

③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、细抛光：在粗抛光之后，以抛光粉来磨成品至晶莹剔透为止。

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。

③次生包裹体：指主体水晶形成后，由于环境的变化使得主晶周围的一些物质沿裂隙进入到其内部而形成的包裹体。形成的原因有出熔作用、裂隙的结晶化、以及放射性元素破坏的作用等。水晶典型的次生包裹体有胶花水晶中的氧化铁充填物等。

25If you are a Billy Crystal admirer, you can appreciate 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》

你们都知道，拿起一个水晶棱镜，让一束阳光通过它，就会得到一个光谱，看起来就像一条连续的彩虹色带。

时尚的收藏爱好者喜欢收藏天然水晶，却常常因为在市场上面对大量的合成水晶看走了眼。市面上的水晶：

Crystals might be grown less than reasonable situations from all ninety two Normally transpiring features other than helium, and helium is usually crystallized at reduced temperatures through the use of twenty five atmospheres of tension.

Many crystals behave like butter in that they are tough at reduced temperatures but soft at bigger temperatures. These are named solids in any respect temperatures underneath their melting stage. A probable definition of the stable is undoubtedly an object that retains its shape if remaining undisturbed. The pertinent problem is how much time the article keeps its shape. A really viscous fluid retains its form for an hour but not a yr. A good must maintain its shape more time than that.

多色�?无色水晶没有多色性。有色水晶有弱到强的多色�?表现为体色的不同深浅。

There's two such doable periodic preparations. In Every single, the initial layer has the atoms packed into a aircraft-triangular lattice in which each atom get more info has six quick neighbours. Figure 2 exhibits this arrangement for the atoms labeled A

水晶的价值还与块体大小有关，同样的颜色和净度级别，块越大越难得。有时候质量级别虽然低一些，但块体够大，也可能价格高于高级别的小晶体

crystal, any reliable content by which the part atoms are arranged in the definite pattern and whose surface regularity demonstrates its inner symmetry.

水晶观赏石在形态、质地、内部特征等方面往往十分奇异。大自然有无限风光，都可以在包裹体水晶种找到缩影。