“periodic spring”的概念、定义、翻译、参考文献-科学参考

单词	periodic spring
释义	periodic spring [¦pir·ē¦äd·ik `spriŋ] ^HYDROLOGY A spring that ebbs and flows periodically, apparently due to natural siphon action.
随便看	ground return ground-return circuit ground rod groundscatter propagation ground sluice ground speed ground start ground state ground-state maser ground strafing ground streamer ground substance ground support equipment ground surveillance radar ground swell ground system ground tackle ground tissue ground-to-cloud discharge ground trace ground truth measurements ground-up read-only memory ground visibility groundwater groundwater decrement

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