“pilot hole”的概念、定义、翻译、参考文献-科学参考

单词	pilot hole
释义	pilot hole Encyclopedia 理学地质钻孔释 pilot hole先导孔在钻深孔或超深孔之前，在深孔或超深孔孔位附近钻的一口直径相对较小、深度相对较浅的钻孔。“双孔方案”中首先施工的钻孔。
随便看	dipole moment, moment of dipole dipole moment of molecules dipole (multipole) sonic logging device dipole oscillator dipole potential dipole radiation dipole source dipole subsurface scattering model dipole term dipole transition Diponegoro’s Revolt dipotassium tetracarbonyl ferrate dip pen nanolithography dip-pen nanolithography Dipper dippers dipping dipping slot wave seismometer dipping，pressing and shredding joint machine dippy egg product dipropyl maleate diprotic acid di proton di-proton diproton

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