“打捞筒”的概念、定义、翻译、参考文献-科学参考

单词	打捞筒
释义	打捞筒 Encyclopedia 工学打捞类工具释 overshot打捞筒从落鱼（井下的落物）外部进行打捞的工具。
随便看	positive semi definite Hermitian matrix positive semi-definite Hermitian matrix positive semi-definite kernel positive semi definite matrix positive semi-definite matrix positive semi-definite operator positive semi definite quadratic form positive semi-definite quadratic form positive semi-definite rational function positive semigroup positive semiorbit positive semi-trough positive sense positive sense single-stranded RNA virus positive sequence positive series positive side positive sidelight positive sign positive skewness positive solution positive species interaction positive spinor positive staining positive strain energy

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。