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METHOD AND APPARATUS FOR PRODUCING SHEAR WAVES FOR SUBSURFACE GEOPHYSICAL INVESTIGATION
METHOD AND APPARATUS FOR PRODUCING SHEAR WAVES FOR SUBSURFACE GEOPHYSICAL INVESTIGATION
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机译:进行地下地球物理调查的剪切波的方法和装置
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摘要
ABSTRACTThis invention relates to a method and apparatus forproducing shear waves (S-waves) for propagation into theearth for geophysical investigation thereof usingcompressional wave vibrators.
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