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Gun·ter AHD[gŭnʹtər] Edmund (1581-1626) D.J.[ˈgʌntə]K.K.[ˈgʌntɚ]NONE（无词性）- English astronomer and mathematician who invented a surveying chain, quadrant, and scale and introduced the trigonometric termscosine and cotangent. 冈特，埃德蒙：(1581-1626) 英国天文学家和数学家，发明了测链，象限仪和标尺，并引进了两个三角学术语，余弦 和 余切
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