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煤层气预探井
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煤层气预探井
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煤层气勘查
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coalbed methane preliminary prospecting well
煤层气预探井
采用低固相或无固相等对煤层污染少的低密度钻井液钻取煤层,采用绳索取心或保压取心技术采取煤心,测试煤层含气量的、专门施工的工程井。
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weakly efficient point
weakly efficient solution
weakly equivalent theory
weakly equivalent transformations
weakly exact category
weakly fillable contact manifold
weakly filling contact manifold
weakly finite measure
weakly F regular ring
weakly F-regular ring
weakly holomorphic function
weakly homologous cycle
weakly homotopy-equivalent spaces
weakly hyperbolic equation
weakly hyperbolic operator
weakly inaccessible
weakly inaccessible aleph
weakly inaccessible cardinal
weakly inaccessible ordinal
weakly independent
weakly independent sequence
weakly independent set
weakly infinite-dimensional space
weakly injective module
weakly integrable function
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