Boisson's ratio is one of the effective parameters to deduce material composition of the earth interior.

泊松比是推测地球内部物质构成的有效参数之一。

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Up to now, almost all researches of the driving force source of the plate movement concentrate the strarting point at the earth interior.

到目前为止，几乎全部有关板块运动驱动力源的研究，都把着眼点集中在地球内部。

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The earth free oscillation can be used to constrain structure of the earth interior, including velocity, discontinuity as well as density distribution.

用地球的自由振荡研究地球内部结构、速度间断面、密度分布等具有射线理论不可替代的优点。

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Carbon-rich worlds contrast sharply with the Earth, whose interior is relatively poor in that element but rich in oxygen.

BBC: Oddballs: The strange worlds beyond our Solar System

Those created in the atmosphere on the other side of the world, which then had to make the 20, 000km (12, 000 mile) journey through the earth's interior to get to Japan, would have had a chance to turn their coats.

ECONOMIST: Neutrinos

Here's one example why we should care: in 1977, diving in the human occupied vehicle Alvin, scientists investigating a volcanic ridge 2500 m (1.5 miles) below sea-level found something totally unexpected -- lush ecosystems thriving at hydrothermal vents fueled by chemical energy released from the Earth's interior.

CNN: Probing the ocean's undiscovered depths