短語詞組短語population age distribution 人口年齡分布population n distribution 人口分布Population vertical distribution 人口垂直分布population spatial distribution pattern 種群分布格局population spatial distribution patterns 種群空間分布格局population and distribution 種群及分布population light distribution 群體光分布population space distribution 種群空間分布Estimating population and distribution 數(shù)量與分布估計 返回 population distribution