“古有蹄类”的概念、定义、翻译、参考文献-科学参考

单词	古有蹄类
释义	古有蹄类 Encyclopedia 理学哺乳纲（化石）释 archaic ungulata古有蹄类哺乳动物有蹄类中已绝灭的一个早期类群的统称。
随便看	single event transient single event upset single event upset，SEU single explosives single exposure single factor alternate experiment single-factor bionics/simple bionics single factor design single-factor experiment single-factor interest rate model single-factor method single factor of safety method Single factor productivity measurement method Single family single-family housing single family unit，SFU single-fator fertilizer trial single fault single flow passage impeller single-fluid description single-fluid theory single flux pinning single focusing mass spectrometer single folding potential single foramen

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。