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单词 θ116194
释义
the world > relative properties > number > probability or statistics > [noun] > graph > relating to population (3)
population curve1875

a graph showing the variation of population with time.

population pyramid1927

a roughly triangular figure on a level base, the width of which at any height indicates the numbers having an age proportional to that height; a…

survivorship curve1953

a curve showing the proportion of a population surviving at different ages.

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