population pyramid

听听怎么读
英 [ˌpɔpjuˈleiʃən ˈpirəmid]
美 [ˌpɑpjəˈleʃən ˈpɪrəmɪd]
是什么意思
  • 释义

    种群锥体;

  • 学习怎么用

    权威例句

    Population Pyramid
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    Gray-Box Optimization using the Parameter-less Population Pyramid
    Gray-Box Optimization using the Parameter-less Population Pyramid
    Breast cancer screening and the changing population pyramid of Japan
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    The rural bite in population pyramids: what are the implications for responsiveness of health systems in middle income countries?
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