对已工作过的铁矿远景区（带），而矿产赋存规律尚不清楚的区段或磁异常区，应加强研究和填制地质图；

For prospective iron ore area or an anomaly zone, where the ore occurrence regularity has not been thoroughly studied , detailed geological investigation and mapping should be made.

youdao

对已工作过的铁矿远景区（带），而矿产赋存规律尚不清楚的区段或磁异常区，应加强研究和填制地质图；

For prospective iron ore area or an anomaly zone, where the ore occurrence regularity has not been thoroughly studied , detailed geological investigation and mapping should be made.

youdao