| 单词 |
observational day |
| 释义 |
observational day observational day[‚äb·zər′vā·shən·əl ¦dā] (geophysics) Any 24-hour period selected as the basis for climatological or hydrological observations. |
| 随便看 |
- april 4, 2015
- april 4, 2016
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- april 4th
- april 5
- april 5, 2007
- april 5, 2011
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