“PD（Population Division）”概念、定义、翻译-科学时代

单词	PD（Population Division）
释义	人口学词汇手册 PD（Population Division）（联合国）人口司
随便看	leaker leak finding leak free leak-free leak hunting leak-indicator leaking leaking mode leaking roof pulse leaking shell leaking through scenery leakless leak level leak pressure leakproof leakproof leak-proof leakproof leakproof leakproof seal leak radiation dose leak rate leak scanning system leak source leak-stopper

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。