煤炭地下气化技术属于一种特殊的采煤方法，它属国际首创。
The coal underground gasification technique belongs to a kind of adopting the coal method specially, it belong to nations found.
煤炭地下气化技术属于一种特殊的采煤方法，它属国际首创。
The coal underground gasification technique belongs to a kind of adopting the coal method specially, it belong to nations found.
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