“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	plane geodetic control network plane geometry plane graph plane grate plane grating plane group plane heterogeneity plane hologram plane intersection management plane involution plane lattice plane layout ofunderground space plane-like plane mirror planemo plane monochromatic electromagnetic wave plane motion plane motion of a rigid body plane motion of rigid bodies plane moving mechanical parking system plane number plane of circular section plane of complex numbers plane of coordinates plane of emergence

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。