“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	geometric transversal theory geometric variable geometric vector geometric viewpoint geometrisation of ore body geometrizable geometrization geometrization conjecture geometrization of gravitation geometrized unit geometrized units geometrodynamics geometrography geometroid geometry Geometry and Tracking geometry axiom geometry deformation geometry in the large geometry of bundles geometry of circles geometry of compass geometry of complex domains geometry of connection geometry of diagrams

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