承压水底板关键层  floor water-resisting key stratum

承载关键层  loading key strata

底板关键层  key stratum of pressed floor

复合关键层  compound key strata

隔水关键层  water-resisting key strata; water-resistant key strata

关键层复合破断  key strata compound breakage

关键层结构  key stratum structure

关键层理论  theory of key stratum; the key stratum theory in ground control; key stratum theory in ground control

关键层判别  Key layer distinguishing

关键层运动  key stratum movement

渗流关键层  seepage key strata; seepage-key-stratum

首采关键层  first mined key seam

物理层关键技术  key technology for PHY

直接顶关键层  key layer of direct roof

主关键层  primary key stratum; primary key stratum PSK; main key stratum

组合关键层  combinatorial key stratum; combinatorial key strata

关键地层界面  key stratal surface

关键分层  key strata; key delamination

关键关节角  key angles