“罗茨鼓风机”的概念、定义、翻译、参考文献-科学参考

单词	罗茨鼓风机
释义	罗茨鼓风机 Encyclopedia 工学往复泵释 roots blower罗茨鼓风机利用两个叶形转子在气缸内作相对运动来压缩和输送气体的回转压缩机。
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。