P波和Pn波速度
P wave and Pn wave velocities
P波速度变化
P-wave velocity variation
S波速度结构
S velocity structure
S wave velocity
S wave velocity structure
structure of S wave velocity
S-wave velocity structure
velocity structure
S-wave velocity crustal structure
波速+电阻率
wave velocity plus resistivity
波速比异常
Anomaly of Seismic Velocity Ratio
Velocity ratio anomaly
intersection method
波速参考点
PWV reference point
The recording site of pulse wave velocity