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来源:百度知道 编辑:UC知道 时间:2024/05/14 00:10:27
The compass first is geomancer invents and the use. The Northern SongDynasty time, the compass applies in the navigation enterprise, enableit to have the vitality which prolonged did not fade. Before theNorthern Song Dynasty, the navigation is determines the directionusing the heavenly bodies position. This method when clear sky stillpermissible utilization, once the cloudy rainy day, the navigationdestiny with difficulty grasped. Since had the compass, it bringsenormous convenient for the navigation, becomes navigator's necessarything. The Zheng He seven under Western world, Columbus to theAmericas mainland discovery with Magellan's round the worldnavigation, all cannot separate with the compass application.