渗透率则是一个不能用地球物理学方法直接测出的、捉摸不定的参数。
Permeability remains an elusive parameter that is not directly measurable by geophysical methods.
目前我们一般用地球物理学、地质学和化学方法进行地震预测。
Several specific geophysical, geological, and chemical methods are presently used for earthquake prediction.
地球物理学地球科学的主要分支，用物理学的方法和原理研究地球。
Geophysics major branch of earth science that applies the principles and methods of physics to the study of the earth.
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