探头周围介质若非各向同性时，应力系数可用椭圆的解析式拟合。
As there are anisotropy in the media surrounding the sonde, the stress coefficients may be fitted with the analytical function of the ellipsoid.
根据横观各向同性介质波动理论，结合波速、波幅的变化规律分析，通过纵波探头平测法，测试了有较大平面的岩块横波在层理面内的偏振波速。
According to the theory of wave crack, the variation rules of wave speed and amplitude, by use of the compressional-wave probe, the polarizing wave speed of rock with large plane is obtained.
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