“挂号邮件保险”概念、定义、翻译-科学时代

单词	挂号邮件保险
释义	保险词汇手册挂号邮件保险 registered mail insurance
随便看	lead angle lead angle lead annealing lead antimony alloy lead apron lead ashes lead azide lead-baffled collimator lead bank lead base alloy lead bath furnace lead battery lead battery metal lead bearing steel lead-bias control lead bit lead block lead-block expansion test lead block test lead bomb lead bonding lead bronze lead bronze lead bullet lead bullion

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。