“positive step”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	positive step
释义	positive step 正步
随便看	selective system of gear changing selective system of preference selective tempering selective tender selective test selective thinning selective tint correction circuits selective top-down selective toxicity selective trace selective tracing routine selective track selective transducer selective translocated spray selective transmission selective transposition selective treatment selective tripping selective tripping system selective tucking selective type herbicidal oil selective updating selective vagotomy selective value selective volatilization