A small earth tremor; esp. one that is detectable only with a sensitive seismometer and that is not associated with an earthquake (see quots.).
| 单词 | θ5070 |
| 释义 | the world > the earth > structure of the earth > formation of features > convulsion > [noun] > earthquake > tremor (3) microseism1887 A small earth tremor; esp. one that is detectable only with a sensitive seismometer and that is not associated with an earthquake (see quots.). Subcategories:— remote (1) — series (1) |
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