(a) (see senses 1a 3); (b) Optics either of two points on the optic axis of a lens or lens system such that the straight line joining one of them…
| 单词 | θ111094 |
| 释义 | the world > movement > absence of movement > [noun] > suspense of movement > point or line of rest in oscillating body (2) nodal pointa1830 (a) (see senses 1a 3); (b) Optics either of two points on the optic axis of a lens or lens system such that the straight line joining one of them… nodea1830 A point or line of absolute or comparative rest in a standing wave system; a point at which a spherical harmonic or similar periodic function has… |
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