“两级”的概念、定义、翻译、参考文献-科学参考

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。

单词	两级
释义	两级 two-stage
随便看	laboratory octane number (车用汽油的) laboratory of materials strength laboratory oscillator laboratory paper machine laboratory paraphernalia laboratory performance laboratory pliers laboratory population laboratory practice laboratory-prepared inoculum laboratory procedure laboratory proportioning laboratory reactor laboratory reagent laboratory reference standard laboratory refiner laboratory reliability test laboratory report laboratory result laboratory rocket laboratory rotor mill laboratory sample laboratory sample divider laboratory sandbath laboratory scale