gas emerged

• 瓦斯突出

gas emerged的用法和样例：

例句

1. The tectonically deformed coal is the essential condition of coal and gas outbursts.
   构造煤是发生煤与瓦斯突出的必要条件。
2. From the theoretical and experimental study, the paper made a brief analysis of the advancing coal mining method affected on coal and gas outbursts.
   从理论和试验研究两方面浅析了前进式采煤法对煤与瓦斯突出的影响。