脆弱性评价分区
zonation of vulanerability-evaluation
环境地质分区评价
Investigation and evaluation
开发条件分区评价
exploitation condition assessment
安全性评价分析
Safety Evaluation and Analysis
分区分层
Sub-region and hierarchical
region and gradation
分区分带特征
distribution characteristics
分区分点法
Method of Different Point and Different Region
分区分段开采
subarea-subsection mining
分区分级控制
district and grade control