The propagation of seismic waves is affected by the earth medium.

地震波的传播是受地球介质影响的。

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Natural earthquakes are actually phenomena of acoustic emission of earth medium.

天然地震实际上是地球介质的一种声发射现象。

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The attenuation of thermal relaxation model is much higher than BISQ model, and also higher than the attenuation of earth medium.

经研究发现热弛豫模型的衰减比BISQ模型大得较多，与地球介质相比衰减量也过大；

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ICO's ten satellites fly about 9, 000 kilometres higher in medium-earth orbit and have a life-span of 12 years.

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ICO's satellites will fly about 9, 000 kilometres higher in medium-earth orbit.

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Some have even suggested the loose rock regolith on the surface of the moon or Mars as a growing medium, although additional minerals would need to be brought from Earth.

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