在古代,船航行时可以借助风和水流的力量来提供动力,当然也可以用船桨划,或者用长篙撑,那怎么控制船行进时的方向呢?这就需要借助位于船尾的一个构件了,它的名字叫船舵。可不要小瞧它,它的发明可是我们古代先民对人类造船文明所做出的巨大贡献。本期,朋朋哥哥就给同学们讲讲两千年前的船舵。 In ancient times, the ship can use the power of wind and water to provide power while navigating, of course, it can also be paddled with paddles, or with long bracing, then how to control the direction of the ship when it travels? This requires a member at the stern It’s name is the rudder. Do not underestimate it, its invention, but our ancient ancestors made great contributions to human shipbuilding civilization. This issue, friends and relatives to give students talk about two thousand years ago the rudder.