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kao kao ni
Pages: 36
Year: Issue:  5
Journal: Science Initiation

Keyword:  等边三角形相反意见地震区域正立方体黑白球自下而上珍珠球几何体大地震蜻蜓;
Abstract: <正> 下图是各用9块等边三角形围成兔和羊的篱笆,有人认为A块面积大,也有人持相反意见,哪你认为哪块大呢?(瞿文华)
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