pithead position井口位置
pithead committee煤矿委员会
pithead price坑口价格
Pithead cable pulley安康坑口电缆滑轮
pithead coal preparation plant[矿业] 矿井选煤厂;矿井选煤厂
pithead power plant坑口电厂;坑口电站
Zhaozhuang Pithead Power Plant赵庄坑口电厂
Pithead radiate slider昌吉坑口放线滑子
N（名词） the top of a mine shaft and the buildings, hoisting gear, etc, situated around it 矿井口; 矿口建筑