The reason of the spontaneous ignition at workface gob is analyzed.The fire place is judged.The measures and effects of fire-fighting are elaborated.是什么意思_The reason of the spontaneous ignition at workface gob is analyzed.The fire place is judged.The measures and effects of fire-fighting are elaborated.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句