| 单词 | sine rhumb |
| 释义 | > as lemmassine rhumb sine rhumb n. ΚΠ 1797 Encycl. Brit. XII. 693/1 The extent from 8 points to 3¼ points, the complement of the course on sine rhumbs. 1828 Moore's Pract. Navigator (ed. 20) 15 Sine rhumbs, marked (SR), is a line which contains the logarithms of the natural sine of every point and quarter point of the Mariner's Compass, figured from the left hand towards the right [etc.]. < as lemmas |
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