“pocket valley”的概念、定义、翻译、参考文献-科学参考

单词	pocket valley
释义	pocket valley [`päk·ǝt ´val·ē] ^GEOLOGY A valley whose head is enclosed by steep walls at the base of which underground water emerges as a spring.
随便看	plate girder plate girder bridge plate glass plate ice plate impedance plate input power platelet platelet-activating factor plate-load impedance plate-making plate modulation plate modulus platen plate neutralization platen press plate proof plate pulse modulation plate resistance plate saturation plate scale plate-shear test plate tectonics plate theory plate tower plate-type exchanger

科学参考收录了103327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。