drawpoint

常见例句

Blocking of drawpoint or orepass is often happened during drawing process.Traditionally, this has to be tackled by blasting, often with great difficulty and even big danger.
漏斗溜井堵塞在井下放矿作业中经常发生,用普通爆破法处理堵塞时,作业极为困难和危险。
Keywords Bottom drawpoint;Velocity distribution;Influence height;Mechanism of influence;Ore drawing at stope;
底部放矿口;速度分布;影响高度;影响机理;采场放矿;
Keywords trench bottom structure;drawpoint effective height;drawpoint diameter;stoping and filling;
堑沟受矿底部结构;放矿口有效高度;放矿口直径;充填采矿法;
Keywords Blocking of drawpoint or orepass;Cutter hood of shaped charge;Mining rocket projectile;Horizontal periscopical system;
漏斗溜井堵塞;矿用火箭弹;聚能罩;水平潜望系统;
drawpoint brow
放矿点口