“underground mined-out areas”的概念、定义、翻译、参考文献-科学参考

单词	underground mined-out areas
释义	underground mined-out areas Encyclopedia 工学地质作用释 underground mined-out areas地下采空区地下矿层被开采后形成的空间。
随便看	positive control positive correlation positive crystal positive current positive curvature positive curvature manifold positive cycle positive definite positive definite bi linear form positive definite bi-linear form positive definite closed form positive definite form positive definite function positive definite functional positive definite Hermitian matrix positive definite inner product axiom positive definite kernel positive definite matrix positive definiteness positive definite operator positive definite potential positive definite product positive definite quadratic form positive definite scalar product positive definite sequence

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。