A shell (shell, n. 12b) bounded by two confocal ellipsoidal surfaces, esp. (in early use) one that is infinitely thin.
| 单词 | θ115974 |
| 释义 | the world > relative properties > number > geometry > shape or figure > [noun] > three-dimensional > shell (2) focaloid1879 A shell (shell, n. 12b) bounded by two confocal ellipsoidal surfaces, esp. (in early use) one that is infinitely thin. homoeoid1883 A shell bounded by two surfaces similar and similarly situated with regard to each other, a homothetic shell; sometimes restricted to such a shell… |
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