... reforestation 面造林 refracting telescope 折光望远镜 refraction 折射 ，折光 ...
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折光式望远镜 refracting telescope
折轴反光望远镜 elbow refractor
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数学家（1564-1642）；论证了不等重的物体下降速度相同；完善了折光式望远镜使他能够获得许多新的发现。
Italian astronomer and mathematician; demonstrated that different weights descend at the same rate; perfected the refracting telescope that enabled him to make many discoveries (1564-1642).
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