单词 | 测链 |
释义 | 〔Gunter〕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 〔link〕Abbr. li.A unit of length used in surveying, equal to 0.01 chain, 7.92 inches, or about 20.12 centimeters.缩写 li.令:测量用长度单位,等于0.01测链,7.92英寸或约等于20.12厘米〔chainman〕Either of the two persons who hold a surveyor's measuring chain.测链员:两个持测量员用测链的人中的任一个 |
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