As an important geophysical tool, the transient electromagnetic method (TEM) has been widely used for exploration of Cu-polymetallic sulfide deposits.
瞬变电磁法在矿产资源等勘查领域已广泛应用，成为寻找铜多金属硫化物矿床的重要方法。
The forward calculation method for the underground transient electromagnetic (TEM) field generated by a large loop on the ground is presented in this paper.
本文讨论了地面大回线源在地下形成瞬变电磁场的正演计算方法。
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