“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	Hemudu Culture Hemudu Site Museum of Yuyao Hemu system hemu system of Li nationality He Naimin He Nan Henan Henan Art Center Henan Art Museum Henan bantou tunes Henan Children’s Library Henan County Henan County Site of Han Dynasty Henan Daily Press Group Henan Danjiang Wetland National Nature Reserve Henandao Henan Dongzhai National Nature Reserve Henan Funiushan National Nature Reserve Henan Geological Museum Henan-Jiangbei Branch Secretariat Henan Jigongshan National Nature Reserve Henan Liankang Shan National Nature Reserve Henan Longshan Culture Henan Luoyang 12·25 Dongdu commercial building fire Henan Luoyang Sui and Tang Luoyang ancient city site protection exhibition project

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