| 单词 | population pyramid |
| 释义 | > as lemmaspopulation pyramid population pyramid n. 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 population distribution. ΘΚΠ the world > life > biology > laboratory analysis > measure > [noun] > record or graph plethysmogram1894 population pyramid1927 survival curve1936 Scatchard plot1958 zeugmatogram1973 the world > relative properties > number > probability or statistics > [noun] > graph > relating to population population curve1875 population pyramid1927 survivorship curve1953 1927 Amer. Jrnl. Sociol. 32 873 The population pyramid of the Jews of western Europe as compared with the rest of the population shows a relatively small number of children and a much larger proportion of old people. 1976 Nature 1 July 19/1 As a result of their high crude birth rate..the population pyramid has a relatively broad base; 51·8% are less than 20 yr old and 28·7% are less than 10 yr old. 1991 P. M. Mather Computer Applic. in Geogr. 191 Figure 6.6(a) shows the population of Peru in 1983 in the form of a population pyramid. < as lemmas |
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