“井下落物”的概念、定义、翻译、参考文献-科学参考

单词	井下落物
释义	井下落物 Encyclopedia 工学钻井复杂事故种类释 downhole junk井下落物钻井时，形状不规则且无打捞部位可与打捞工具连接的物体（如钻头牙轮、刮刀片、井口工具等）落入井内的现象。
随便看	quasi-unitary matrix quasi-universal class quasi-unmixed domain quasi-variable quasivariable quasivariational quasivariational inequality quasivariational inequation quasi-variety quasi-variety of algebraic systems quasi-variety of groups quasi-vector quasi velocity Quasi-War with France quasi-wood engravings on the coffin unearthed at Prince Yongtai’s tomb Quasi-Zenith Satellite Quasi-Zenith satellite system quasi-zenith satellite system quasi-zero-dimensional quassia quassia family quassin quassinane quatermary glacial period quatern-

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。