“钻头检查”的概念、定义、翻译、参考文献-科学参考

单词	钻头检查
释义	钻头检查 Encyclopedia 工学钻井装备释 bit inspection钻头检查为保证入井钻头符合预定要求，在入井前对钻头进行的核查工作。
随便看	principal component estimation principal component of order p principal component regression principal component regression method principal component regression method (PCR) principal component regression spectrophotometry principal components principal components analysis principal component transformation principal computable enumeration principal congruence principal congruence relation principal congruence subgroup principal conjecture principal conjunctive normal form principal connex principal convergent principal coordinates of neighbour matrics principal crossed homomorphism principal curvature principal curve principal curves principal deformation principal determinant principal diagonal

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。