“mine ventilation network”的概念、定义、翻译、参考文献-科学参考

单词	mine ventilation network
释义	mine ventilation network Encyclopedia 工学矿井通风系统释 mine ventilation network矿井通风网络矿井通风系统中风流分岔、汇合线路相互连接而成的风道网。
随便看	positive limit set positive linear functional positive linear operator positive link positive literal positive logic positive logical calculus positive logical formula positive lossless storage positively definite positively definite form positively definite kernel positively definite matrix positively definite quadratic form positively graded module positively invariant subspace positively oriented base positively semi-definite positively stable point positively stable solution positive manifold positive map positive mapping positive mass conjecture positive matrix

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。