gas emerged的用法和樣例：
例句
- The tectonically deformed coal is the essential condition of coal and gas outbursts.
構造煤是發(fā)生煤與瓦斯突出的必要條件。 - From the theoretical and experimental study, the paper made a brief analysis of the advancing coal mining method affected on coal and gas outbursts.
從理論和試驗研究?jì)煞矫鏈\析了前進(jìn)式采煤法對煤與瓦斯突出的影響。
