地—井瞬变电磁关键技术问题研究
杜庆丰, 冯晓兰, 黄跃

Research on key technical problems of surface-borehole TEM
Qing-Feng DU, Xiao-Lan FENG, Yue HUANG
图1 三分量TEM整流器、发射机、接收机及探头
Fig.1 Rectifier, transmitter, receiver and probes of the thre-component TEM system