“第二类序数”的概念、定义、翻译、参考文献-科学参考

单词	第二类序数
释义	第二类序数 Mathematics ordinal of the second class第二类序数
随便看	Penrose singularity theorem Penrose stairway Penrose tile Penrose tiles Penrose tiling Penrose transform Penrose triangle pen shell pension annuity insurance pension cloud service management platform pension conversion function pension information platform Pension Insurance for the Employees of Public Institutions pension insurance fund budget Pension service model pensiveness leading to qi knotting penstock pent- penta- pentabolo pentacarbonyliron pentacene pentachlorobenzene pentachlorophenol pentachlorophenol poisoning

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。