“正反挤压”的概念、定义、翻译、参考文献-科学参考

单词	正反挤压
释义	正反挤压 backward and forward extrusion
随便看	pump valve seat pump voltage pump water conduits pump waveguide pump wheel pump work pump works pun puna punch punch adapter punch advance punch and profile shaping machine punch and programmed electronic calculator punch and shear punch and shears punch & bind machine punch block punch block mechanism punch boring punch bowl punch brush punch-card punch card punch card code

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。