“坎儿井地下水利工程”的概念、定义、翻译、参考文献-科学参考

单词	坎儿井地下水利工程
释义	坎儿井地下水利工程 Encyclopedia 历史学水利设施及附属物释 Karez underground water conservancy project坎儿井地下水利工程中国古代利用地面坡度引用地下水的水利设施。
随便看	frequency shift of scattering light frequency shift theorem frequency-shift track circuit frequency-size distribution frequency spectrum frequency stability frequency stability criterion frequency stability measurement frequency stabilization frequency stabilized laser frequency standard frequency standards frequency step frequency sweep mode frequency swept laser frequency switching frequency synchronization frequency synthesis frequency synthesized signal generator frequency synthesizer frequency table frequency theorem frequency theory frequency theory of probability frequency thermometer

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。