“perennial spring”的概念、定义、翻译、参考文献-科学参考

单词	perennial spring
释义	perennial spring [pǝ`ren·ē·ǝl `spriŋ] ^HYDROLOGY A spring that flows continuously, as opposed to an intermittent spring or a periodic spring.
随便看	second quadrant second quantization second radiation constant second-remove subroutine second sound second species seconds pendulum second strike second-strike capability second-time-around echo second-trip echo second water second-year ice secrecy system secretin secretion secretor gene secretory granules secretory structure secret weapon sectile section sectional center sectional conveyor sectional core barrel

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。