“Ra（radium）”概念、定义、翻译-科学时代

单词	Ra（radium）
释义	环境科学与工程词汇手册 Ra（radium）镭
随便看	level premium level premium group permanent plan level premium insurance level premium plan level premium renewable term health insurance level premium reserve level production level rate level recorder level-reversed bench level rod level rod level-sensitive clocking level sensitivity level-shifting amplifier (LSA) level-shifting diode level-skipping level slicing levels of adequacy levels of articulation levels of measurement level staff level status block level straight acceleration flight method level straight deceleration flight method

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。