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瓦斯涌出量
wǎsī yǒngchūliàng
stresses
mining.
газообильность
瓦斯涌出量
矿井中 矿物发出的瓦斯在每立方米空气中的含量
wǎsī yǒngchūliàng
mining.
газообильность
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