“hollow electron beam”的概念、定义、翻译、参考文献-科学参考

单词	hollow electron beam
释义	hollow electron beam 中空电子束
随便看	extension filter extension fitting extension fixture extension flap extension fork extension fracture extension hand wheel block extension head extension hunting extension instrument extension jamb extension joint extension key extension ladder extension lamp extension lathe extension lead extension leader extension line extension line for dimension extension machine extension meter extension micrometer extension modulus extension number

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。