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地电阻率是观测地下介质电性结构随时间的变化。
Observe the electricity structure of underground medium and change over time in resistivity of ground.
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加速度指的是速度随时间的变化率。
By acceleration is meant the rate of change of velocity with time.
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加速度指的是速度随时间的变化率。
By acceleration is meant the rate of change of velocity with time.
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