“半正定二次估计”的概念、定义、翻译、参考文献-科学参考

单词	半正定二次估计
释义	半正定二次估计 Encyclopedia 理学方差分析模型释 non-negative definite quadratic estimator 半正定二次估计具有半正定二次型形式的估计量。
随便看	drift pulse drift rate drift scan drift-scan measurement drift scanning drifts of charged particle drift soil drift speed drift subpulse drift support and reinforcement drift system drift term drift tube drift tube linear accelerator drift turbulence drift vector drift velocity drift velocity of thermomass drift wave drift wave turbulence Drigalski Island drill drillable bridge plug drill barrow drill bit

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。