Then a new technique was taken to extinguish the fire by making use of the existing slurry injecting system to inject composite fly ash gel into the fire zone.是什么意思_Then a new technique was taken to extinguish the fire by making use of the existing slurry injecting system to inject composite fly ash gel into the fire zone.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句