“Petty-Clark's Law”的概念、定义、翻译、参考文献-科学参考

单词	Petty-Clark's Law
释义	Petty-Clark's Law Encyclopedia 经济学工业行业结构释 Petty-Clark's Law配第-克拉克定理有关经济发展中就业人口在三次产业中分布结构变化的理论。
随便看	precious metals for brazing precious metals for crucible material precious metals for electrical contact precious metals for jewelry precious metals for sensor precious metals for temperature measurement precious metal shape memory alloy precious metals metallurgy precious metals pharmaceuticals precious metal target materials Precious Mirror Precious Mirror for Health Precious Mirror of Painting preciousness of life precious stone precious wild animals precipated calcium carbonate precipitability precipitable precipitable water vapour precipitant precipitate precipitation precipitation amount in China precipitation bias scores

科学参考收录了854744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。