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2 1 000 m、2 000 m塑胶电缆专用绞车

Fig.2 Special winches for 1 000 m and 2 000 m plastic cables