“well-rig”的概念、定义、翻译、参考文献-科学参考

单词	well-rig
释义	well-rig Encyclopedia 工学水利机械释 well-rig打井机械用来开发地下水资源的机械，包括各式钻机（又称打井机）、水泵（泥浆泵），以及与其相配套的卷扬机等。
随便看	closed element closed embedding closed-end fund closed equivalence relation closed expression closed extension closed family of sets closed field closed filament closed filter closed fishing areas closed fishing season closed-flux device closed fork mounting closed form closed-form number closed-form solution closed formula closed fuel cycle closed function closed geodesic closed graph closed-graph mapping closed graph theorem closed-graph theorem

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。