“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	revelation Revelations revelle factor Revenge in Cuiping Mountain Revenge tragedy revenue Revenue Act of 1971 revenue and expenditure budgeting method revenue budget examination Revenue Center Revenue Equalisation Reserve Fund revenue of administrative and institutional units revenue of recovery of principal income loans revenue sharing contract revenue surplus/revenue reserve reverberant field reverberant sound reverberation reverberation characteristic reverberation control reverberation level reverberation mapping reverberation masking level Reverberation of Life reverberation room

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