drawpoint

常見例句

• 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(yè)中經(jīng)常發(fā)生,用普通爆破法処理堵塞時(shí),作業(yè)極爲(wèi)睏難和危險(xiǎn)。
• 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(jī)理;採(cǎi)場(chǎng)放鑛;
• Keywords trench bottom structure;drawpoint effective height;drawpoint diameter;stoping and filling;
  塹溝受鑛底部結(jié)搆;放鑛口有傚高度;放鑛口直逕;充填採(cǎi)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(tǒng);
• drawpoint brow
  放鑛點(diǎn)口
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