“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	optical disc servo control system optical disc tower optical disk optical disk read and write technology optical disk storage materials optical distance optical distribution network，ODN optical double optical double galaxy optical double star Optical drift error optical, electronic and magnetic active functional polymer optical element optical emission optical emissivity analyzer optical encryption optical endoscopy and cold light source optical engine optical equipment optical excitation optical excitation of carrier optical extraction without prejudice optical feedback optical fiber optical fiber amplifier

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