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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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lower-most stratosphere
lower nilradical
lower one-sided limit
lower order
lower outer density
lower paraselenea
lower parhelion
lower plant
lower Privalov operator
lower process capability index
lower pure value
lower quartile
lower radical
lower radical class
lower relaxation method
lower Riemann integral
Lower Saxony
lower semi continuity
lower semi-continuity
lower semicontinuity
lower semi continuous
lower semi-continuous
lower semicontinuous
lower semicontinuous decomposition
lower semicontinuous equivalence
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