The methane build-up from newly liberated gas is deadly as witnessed in the Massey Energy Big Bend mine recently.
最近在 Massey Energy Big Bend 矿山中见证了从新释放的天然气中积聚的甲烷是致命的。
The yield of both tar and gas is decreased with the decrease of exhausting temperature of liberated matter.
降低挥发物的出口温度，可以降低焦油和气体收率。
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