On condition that we have known the true azimuth of the tunnel and determined only two false dip in the tunnel, the attitude value has gotten by simple computation.
在已知巷道掘进方位角前提下，仅现场实测两个伪倾角数值，经简单公式计算，便可得到顶板产状。
2
The 3-c induction log system can directly measure both horizontal and vertical resistivity of strata and also measure the dip Angle and azimuth of strata.