| 单词 | internal contact |
| 释义 | > as lemmasinternal contact internal contact n. Astronomy (in the transit of a planet across the sun) either of the points at the start and end of the transit (second and third contacts) when the planet is just within the edge of the sun's disc; (also) the corresponding points during an annular solar eclipse. ΚΠ 1739 Philos. Trans. 1737–8 (Royal Soc.) 40 184 The first internal Contact of the Disks, at the Formation of the Annulus, was considerably below the West Point of the Sun's Disk. 1898 Mem. Brit. Astron. Assoc. 6 137 (table) Limbs very steady at internal contact. 2003 D. Leverington Babylon to Voyager & Beyond v. 141 When the transit has virtually finished, these internal and external contacts are seen in reverse. < as lemmas |
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