“叉形针”的概念、定义、翻译、参考文献-科学参考

单词	叉形针
释义	叉形针 Encyclopedia 工学[非织造布装备]释 forked needle叉形针刺针的针叶部分侧面开叉或者在针头上有一倒叉口的刺针。
随便看	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 positive strand positive subspace positive supportive reaction positive (symmetric) operator

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。