伴随着每次呼吸，用这种方法躯干极微地振荡与伸展。
In this way the torso oscillates and lengthens almost imperceptibly with the breath.
试验观测表明：这种仪器对监测极微震活动、地声观测和研究断层的现代活动性都是一种有用的仪器。
The testing observations indicate that such a recorder is a kind of useful instrument for microseismic observation, for observation of ground acoustics and for study present fault activity.
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