“engineering procurement”的概念、定义、翻译、参考文献-科学参考

单词	engineering procurement
释义	engineering procurement Encyclopedia 工学建筑工程管理释 engineering procurement工程采购在工程建设项目实施过程中对工程所需内容进行采购的活动。
随便看	nonnegative element nonnegative function nonnegative integer nonnegative integral kernel nonnegative manifold nonnegative matrix non-negative matrix factorization nonnegative measure nonnegative number nonnegative operator nonnegative orthant nonnegative partial sum nonnegative quadratic form nonnegative semi-definite matrix nonnegative solution nonnegative splitting nonnegativity nonnegativity condition nonnegativity requirement non nesting matching non-nesting matching nonnesting matching non nesting partition non-nesting partition nonnesting partition

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。