“downhole junk”的概念、定义、翻译、参考文献-科学参考

单词	downhole junk
释义	downhole junk 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	qualification inflation qualification management of environmental impact assessment individuals qualification management of environmental impact assessment institutions qualification of road transportation qualification of surveying and mapping organization qualification research qualifications for a journalist qualifications for the background of candidates qualification system for publishing units qualification test qualification testing qualification testing for drivers of motor vehicles qualification库恩-塔克约束规格 qualificatory qualified coordination Qualified Domestic Institutional Investor Qualified Foreign Institutional Investors qualified inventor qualified manufacturers list qualified opinion qualified products list qualified project quality qualified suppliers list qualitative Qualitative analysis

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。