“自由回声”的概念、定义、翻译、参考文献-科学参考

单词	自由回声
释义	自由回声 free echoes
随便看	bleeder pipe bleeder plug bleeder resistance bleeder resistor bleeders' joint bleeder steam bleeder turbine bleeder type condenser bleeder valve bleed gas bleed heating bleed hole bleeding bleeding after tonsillectomy bleeding canker bleeding capacity bleeding cycle bleeding disease bleeding export bleeding from orifices of the head bleeding from the nine orifices bleeding hormone bleeding in late pregnancy bleeding of a feeder bleeding of steam

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。