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Huygens1, Christiaan (1629-95), Dutch physicist, mathematician, and astronomer. His wave theory of light enabled him to explain reflection and refraction. He also patented a pendulum clock, improved the lenses of his telescope, discovered a satellite of Saturn, and recognized the nature of Saturn's rings, which had eluded Galileo. 惠更斯, 克里斯蒂安（1629-1695, 荷兰物理学家、数学家和天文学家, 他的光波理论解释了反射和折射原理; 他还获得摆钟的专利, 改进了望远镜的透镜, 发现了土星的一颗卫星, 弄清了曾难倒伽利略的土星光环的本质）。
a European space probe which is part of the Cassini spacecraft, due to detach from the orbiter and land on Saturn's moon Titan in 2004. （欧洲的） 惠更斯太空探测器（卡西尼太空船的一部分, 计划2004年离开太空船抵达土星的卫星土卫六）。
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