A line (imaginary or on a map) connecting points at which some chosen time interval has the same value.
| 单词 | θ7350 |
| 释义 | the world > the earth > earth sciences > geography > map-making > map > [noun] > line on map > interval of time (1) isochron1940 A line (imaginary or on a map) connecting points at which some chosen time interval has the same value. |
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