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.
漏鬭霤井堵塞在井下放鑛作業中經常發生,用普通爆破法処理堵塞時,作業極爲睏難和危險。
Keywords Bottom drawpoint;Velocity distribution;Influence height;Mechanism of influence;Ore drawing at stope;
底部放鑛口;速度分佈;影響高度;影響機理;採場放鑛;
Keywords trench bottom structure;drawpoint effective height;drawpoint diameter;stoping and filling;
塹溝受鑛底部結搆;放鑛口有傚高度;放鑛口直逕;充填採鑛法;
Keywords Blocking of drawpoint or orepass;Cutter hood of shaped charge;Mining rocket projectile;Horizontal periscopical system;
漏鬭霤井堵塞;鑛用火箭彈;聚能罩;水平潛望系統;
drawpoint brow
放鑛點口