“preparatory period”的概念、定义、翻译、参考文献-科学参考

单词	preparatory period
释义	preparatory period 预备期
随便看	photometric transfer function photometric unit photometric units photometric wedge photometrology photometry photomicrocopy photomicrograph photomicrographic analysis photomicrographic apparatus photomicrography photomicrometrology photomicroscope photomicroscopy photomigration technique photomilling photomixer photomixer diode photomixing photomixing technique photomodulator photomonate photomontage photomorphism photomorphogenesis

科学参考收录了1248194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。