FIRE NREVENTION AND EXTLNGUISH TECHNIQUES WITH AIR REGULATION BY ADDITION OF PRESSURE AND ADVANCE OUFFLOW IN FULLY MECHANIZED MINING FACE是什么意思_FIRE NREVENTION AND EXTLNGUISH TECHNIQUES WITH AIR REGULATION BY ADDITION OF PRESSURE AND ADVANCE OUFFLOW IN FULLY MECHANIZED MINING FACE在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句