煤炭回采率 meaning in English

coal recovery rate

Abstract : based on the actual state in fengshuigou coal mine , provides the technology ways of lifting coal extracion rate , which are reforming coal winning machine , reducing thickness loss , adjusting mining triangle coal , reducing area loss , reforming extraction process and extracting goaf
文摘:根据风水沟煤矿实际情况，提出了改造采煤机，减少厚度损失；调采三角煤，减少面积损失；改变回采工艺回收老塘等提高煤炭回采率的技术途径。