“negative work”的概念、定义、翻译、参考文献-科学参考

单词	negative work
释义	negative work [`neg·ǝd·iv `wǝrk] ^{INDUSTRIAL ENGINEERING} Work that is performed with the assistance of gravity so that the muscular effort required involves only control of the load.
随便看	copper mica copper nickel copper nitrite copper number copper oleate copperon copper ore copper orthoarsenite copper oxide copper oxide photovoltaic cell copper oxide rectifier copperplate engraving copper plating copper powder copper pyrite copper resinate copper spot copper steel copper-strip corrosion copper-strip test copper sulfate copper sulfide copper sulfide rectifier copper sweetening copper uranite

科学参考收录了103327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。