(a) a plane of ‘jointing’ or fissure, as in a rock; (b) = jointer, n.2 1a.
| 单词 | θ4873 |
| 释义 | the world > the earth > structure of the earth > structural features > discontinuity or unconformity > [noun] > joint > plane (2) jointing-plane1854 (a) a plane of ‘jointing’ or fissure, as in a rock; (b) = jointer, n.2 1a. joint-plane1855 a plane in rock in which a joint exists or is liable to form; also, an exposed surface that was once such a plane. |
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