“开钻”的概念、定义、翻译、参考文献-科学参考

单词	开钻
释义	开钻 Encyclopedia 工学钻前工程释 spud in开钻下入导管或各层套管后，第一只钻头开始破岩形成井眼的井下作业。又称开始钻进。
随便看	landscape engineeringmachinery landscape engineering site environmental management landscape evenness landscape evolution landscape factor Landscape Feeling landscape,Flower,Bird by Yun Shouping landscape fragmentation landscape fragmentation degree landscape function landscape gardening management landscape genetics landscape graphic methodology landscape heterogeneity landscape history Landscape in the Mist landscape lacunarity index landscape lighting landscape lighting in karst cave landscape maintenance machinery landscape map landscape mapping landscape metrics landscape mode landscape model

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。