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汉语拼音：dì màn

地球内部介于地壳 和地核之间的中间层。深度从地下5—70千米至2 900千米。物质基本上呈固态，局部具有塑性。主要成 分是铁、镁的硅酸盐类。由上而下，铁、镁含量渐增。以地下1，000千米深处为界，分上地幔和下地幔。

1. 地球内介于地壳和地核之间的部分，厚度约2900多公里。

• The earth has a core and a mantle around it.

  地球的中心是地核,地核的周围是地幔.

• The mesosphere comprises the rest of the mantle below the asthenosphere.

  中间圈包括岩流圈以下地幔的其余部分.

• There is a higher heat production in the upper mantle below oceans than below continents.

  大洋下的上地幔要比大陆下的上地幔有较高的热产率.

• S - type granites should not be considered as the evidence of plume magmatism.

  不能把S - 型花岗岩作为地幔柱岩浆作用的证据.

• Our result shows the nonuniform distribution of mantle heat flow in China.

  结果显示,中国大陆地幔热流的空间分布不均匀.

• CONTINENTAL MANTLE METASOMATISM : A PRECURSORY EVENT OF PLATFORM ACTIVATION?

  大陆地幔交代作用: 地台活化的先驱事件?

• The Tianshan basalts may result from a mantle plume.

  天山玄武岩可能是产生于地幔柱头.

• 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.

• An upwelling of molten material from the earth's mantle.

  地柱从地幔隆起的一段熔化物.

• Internally the earth consists of two parts a core and a mantle.

  地球内部由地核和地幔两部分组成.

• A hermit, he wears a camel - hair tunic beneath a dark - green mantle.

  隐士, 他身穿一件骆驼毛外衣下面暗绿色地幔.

• Magma surged into the volcano from the Earth's mantle.

  岩浆从地球的地幔涌入火山.

• The LIP ( large igneous province ) is the best exhibition when the.

  大火成岩省 ( LIP ) 是地幔柱到达地表最好的表现形式.

• The issue of upper vs whole mantle convection is critically discussed.

  最后,着重讨论了上地幔与全地幔对流的论争.

• The upper mantle behaves as a dense solid.

  (乙)的上地幔的行为作为一种致密坚实.