英语词汇“longwall mining with sublevel caving”的中英文释义、用法、翻译及短语词组-英汉翻译词典

单词	longwall mining with sublevel caving
释义	longwall mining with sublevel caving [?l??w?:l ?ma?n?? wie ?s?b?levl ?keivi?] 释义长壁放顶煤采煤法行业词典煤炭长壁放顶煤采煤法???"开采6m以上缓斜厚煤层时,先采出煤层底部长壁工作面的煤,随即放采上部顶煤的采煤方法。"???
随便看	poly propenyl alcohol polypropionate polypropionates polypropylene polypropylene adipate polypropylene band packing machine polypropylene belt polypropylenebutyl rubber polypropylene butyl rubber polypropylene composite polypropylene condenser polypropylene cotton blended yarn polypropylene fabric polypropylene fiber polypropylene fibre polypropylene fibre carpet adhesive polypropylene fibre reinforcement polypropylene filament oil polypropylene filament yarn polypropylene film polypropylene film bag polypropylene film bag maker polypropylene filter gauze polypropylene frame for bioprosthesis valve polypropylene glycol

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longwall mining with sublevel caving