“coalbed methane preliminary prospecting well”的概念、定义、翻译、参考文献-科学参考

单词	coalbed methane preliminary prospecting well
释义	coalbed methane preliminary prospecting well Encyclopedia 理学煤层气勘查释 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。
随便看	principal fractionary ideal principal function principal function classes principal functor principal fundamental solution principal G bundle principal G-bundle principal genus principal G-object principal graduate principal graph principal group principal groupoid principal homogeneous G-set principal homogeneous space principal homomorphism principal horizontal line of photograph principal ideal principal ideal domain principal ideal ring principal ideal theorem principal idele principal idempotent principal idempotent element principal identity

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