“无疫证书”的概念、定义、翻译、参考文献-科学参考

单词	无疫证书
释义	无疫证书 clean bill of health (船只)
随便看	beam current gain beam-current-lag beam current lag beam cut-off beam cutter beam-defining aperture beam-defining slit beam deflecting crystal beam deflecting mirror beam deflection beam deflection system beam deflection tube beam-deflection tube beam deflection valve beam deflector beam density beam depth beam deviation factor beam deviation loss beam diameter beam diaphragm beam direction beam directionality beam directional stability beam displacement

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。