“nautical astronomy”的概念、定义、翻译、参考文献-科学参考

单词	nautical astronomy
释义	nautical astronomy [`nȯd·ǝ·kǝl ǝ`strän·ǝ·mē] ^NAVIGATION The science of determining position and direction of a ship by observation of celestial objects.
随便看	ball-and-socket joint ball-and-trunnion joint ballas ballast ballast factor ballast lamp ballast leg ballast line ballast movement ballast passage ballast pump ballast reactor ballast resistor ballast tank ballast tube ball bearing ball-bearing hinge ball-bearing pulverizer ball bonding ball breaker ball burnishing ball bushing ball catch ball check valve ball clay

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