查询词典 mantle

Rare samples of mother rock 'kimberlite', from Siberia, South Africa and Australia, displayed as an introduction to the geological section of the museum,- how diamonds originate from a volcanic magma, formed in the earth's mantle, 100 - 200 km below the earth's surface, and are transported through volcanic pipes to the earth's surface.

陈列了来自西伯利亚、南非和澳大利亚的罕见的金伯利岩样本。通过对它们的地质解理面的介绍，来说明钻石在火山岩浆中的形成过程，即钻石是在100~200公里的地幔中形成，随着火山爆发被喷射到地球表面。一个显示全世界钻石产量的模型（0.4立方米大小）是博物馆的精粹，就这0.4立方米的钻石，养活着全球200多万钻石业人。

Natural diamonds often exist in the Kimberlite pipes of the mantle, where often contain the inorganic elements--- sulfur. So the inclusions of natural diamonds are always carbonate minerals and sulfide. Undoubtedly, the study of the additive sulfur action in the course of synthesizing diamond will further our understanding the reason of natural germ formation.

天然金刚石多产生于地壳中的金伯利岩和钾镁煌斑岩，该岩层中含有非金属元素硫，天然金刚石中的包裹体通常为硅酸盐矿物和硫化物[41]，因此研究添加剂硫在合成金刚石中的影响是认识天然金刚石成因的重要方面。

The characters of geochemistry are rich alkali. And at the same time the content of calcium is high. They are rich in alkali, high in Potassium, enriched in LILE, LREE and Pb, depleted in HFSE and have a small Sr, Nd, Pb isotope range. Their source is probably a kind of even metasomatic mantle. This is consistent with the fact that there is kimberlite containing flogopite in the deep-source enclosure of Cenozoic super-K alkali lava in the southern part of this rock zone.

组成这些钾质碱性岩带的岩石：在岩相上，包括深成相、浅成相和喷溢相等不同岩相；在岩性上，从超基性、基性、中性到酸性岩石；造岩矿物，从超基性到酸性岩石中均有透辉石，在基性、超基性岩中有霞石；在岩石化学成分上，所有岩石均表现出富碱高钾富钙，微量元素富集Rb、Sr、Ba等大离子亲石元素和Th、U等放射性元素，贫Nb、Ta、Zr、Hf等高场强元素；稀土元素富集轻稀土，铕负异常不明显；Sr、Nd、Pb同位素组成，显示了物质来源于富集地幔源区。

A giant clam in Kiribati's Phoenix Islands exhibits the striking colors of its mantle.

位于基里巴斯的长生岛有一只大蛤在展示它的斗篷的惊人的颜色。

Patterns in Nature: Shells A giant clam in Kiribati's Phoenix Islands exhibits the striking colors of its mantle.

位于基里巴斯的长生岛有一只大蛤在展示它的斗篷的惊人的颜色。

Then it seemed to Tuor that Ulmo parted his grey mantle, and cast to him a lappet, and as it fell about him it was for him a great cloak wherein he might wrap himself over all, from head to foot.

接着在Tuor看来似乎Ulmo撕开那灰色斗篷，把其中一片抛给了他；当它落到他身上，它对他来说就是一件大斗篷，可以把他从头到脚完全包裹其中。

Scientists call this layer of crust and upper mantle the lithosphere.

科学家称这层地壳和上部地幔为岩石圈。

The flow of lower crust and variation of Moho undulation under the influence of mantle convection is investigated by a quantitative model.

本文用定量模型研究了在地幔对流作用下下地壳物质流动过程和莫霍面起伏的变化。

Forbid them to hold forth upon the freedom of nations and the wrongs of mankind, and they'll quarrel with Mrs. Jones about the shape of a mantle or the character of a small maid-servant.

禁止她们对民族的解放和人类的过失夸夸其谈，她们就会跟琼斯夫人为了一件斗篷的样子或一个小女佣的性格争吵不休。

The concave and mantle made by high manganese steel.

6凹和地幔所作的高锰钢。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。