难检字字典在线查询

汉语拼音：xià dì màn

深度大约在1000公里以下的地幔的部分。

• Like the CORE of earth, the mantle can also be divided into two concentric layers, the lower mantle and the upper mantle.

  就像地球的核部一样。地幔也可分为两个同心圆圈层，下地幔和上地幔。

• This hard plate floats on the denser material of the lower mantle the way a piece of wood floats on a pond.

  板块漂浮在密度更大的下地幔上，正如一块木头漂浮在水池中一样。

• This is the dominant problem to constraint the mineral composition of the Earth's lower mantle.

  这一问题的研究对确定下地幔真实的矿物学组成有十分重要的意义。

• There are three layers: the upper mantle, lower mantle and the core.

  地球内部分为三层：上地幔，下地幔以及地核。

• Seismologists Measured the Heat Flow from Liquid Core to Lower Mantle

  地震学家测量了从地球液核到下地幔的热流