The anisotropic effect is controlled by the lithologic characteristics, and apparent for slate and phyllite, while not for the other two kinds of rocks, mylonite and metasandstone.

• 在试验所用的4种岩石中，板岩和千枚岩的波速比的各向异性明显，而糜棱岩和变质砂岩则不甚发育。