区域普查 meaning in Chinese

regional reconnaissance

This paper reviewed the researches and applications of seismic techniques in mining exploration in detail , including the fundamental researches composed of acoustic properties and scattering characteristics , regional reconnaissance studies . 2 - d and 3 - d surface seismic imaging and down hole seismic imaging , and pointed out the main seismic method used in mining exploration is reflected wave methods at present
摘要系统地总结了国内外现有金属矿地震勘探技术及其研究与应用现状，其中包括岩石物理性质分析和散射波场特征分析等基础研究、区域普查地震技术、二维和三维地震成像技术及井下地震勘探技术。