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汉语拼音：dì hé

地球内部构造的最 里层。深度从地下2 900千米至地球中心。物质成分以铁、镍为主。以地下5 100千米深处为界，分外核 和内核。外核的物质接近液态，内核的物质呈固态。

1. 从2900公里深处开始的地球中心部分。

• Judge by ordinary standards, the core is made of rather dense stuff.

  按一般标准衡量, 地核是由相当致密的物质组成的.

• 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 earth's core, at least the outer one is believed to consist of nickel and iron.

  一般认为地核至少是外核由镍和铁构成.

• 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.

• Therefore our knowledge of the core is quite incomplete.

  因此我们对地核的认识还非常不全面.

• She ticked offthe items one by one.

  她逐一地核封项目.

• The lithosphere is the soil mantle that wraps the core of the earth.

  岩石圈就是包裹在地核外的土壤表层.

• Earth's core by the in - house, the three components of the crust and mantle.

  地球的内部由地核 、 地幔和地壳三层组成.

• If you want to probe into the core of the sphere , you need a steel drill.

  探索地核需要钢制的钻头.

• He concluded that the depth marked the boundary between a solid mantle and the liquid core.

  他推断这个深度标明了固态地幔和液态地核之间的界限.

• At this time such tones already available in the molten lava and magma of Earth's core.

  此刻,这类音调已在地核中的熔浆中可得.

• The Earth's core consists of a fluid outer core and a solid inner core.

  地核由液态的外核和固态的内核组成.