词汇	balloon filter
释义	balloon filter 圆滤瓶
随便看	coal-mining under three circumstances coal mining under village coal mining under water-bodies coal mining under water body coal mining under water-containing coal mining under water strata coal mining upon confined water coal mining waste coal-mining waste Coal mining waste field coal of entering furnace coal-offering system Coal of holding down Coal mining wastes coal-mining wastes coal-mining water gel explosive coal mining water inrush coal mining while gas drainage coal mining with gangue backfilling coal mining without pillars Coal mining with top-coal caving coal mining with two wings coal mining with water conservation coal mining with water power coal mining with water pressure