藕床生厌倦
发表于 2025-3-26 23:11:44
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Indicative
发表于 2025-3-27 04:47:34
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确定无疑
发表于 2025-3-27 08:13:55
Epilogue: How Do We Know the Facts of Demography?,in birth rates have a larger influence on the age distribution than do differences in death rates. They often claim that a poor country whose population is growing rapidly will increase its per capita income faster if it lowers its birth rate rather than maintaining it at a high level.
钝剑
发表于 2025-3-27 12:13:23
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APO
发表于 2025-3-27 17:22:56
https://doi.org/10.1007/978-3-030-76043-4But male death rates at most ages are at least 50 percent higher than female rates. The ratio of male to female rates, simply averaged over the ages, may show males 80 percent higher; the average with living population as weights may show males 70 percent higher; with deaths as weights males may be
Ingenuity
发表于 2025-3-27 19:38:26
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capsaicin
发表于 2025-3-27 22:35:25
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我们的面粉
发表于 2025-3-28 04:26:24
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千篇一律
发表于 2025-3-28 06:47:35
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deciduous
发表于 2025-3-28 10:30:01
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