分析了渔获物的年龄组成。
报道了宁波沿海珠带拟蟹守螺种群的年龄组成与生长情况 。
The age composition and growth of Cerithidea cingulatus in Ningbo Coast are reported.
并根据新竹产量与竹林密度和林分年龄组成的非线性相关关系，建立了新竹产量的预测模型。
The model of calculating new culm yield has also been established depending on the nonlinear relationship between new culm yield and bamboo stand density, culm age component.
通过对银杉主要群落种群的数量统计和年龄组成的分析，编绘了银杉种群的特定时间生命表、存活曲线和年龄结构图。
The time specific life table, survivorship curve and age structure of Cathaya argyrophylla population were obtained through analysing the demography and age structures of its main coenopopulations.
本文应用模糊数学方法分析了厦门海区大黄鱼生殖群体的渔获年龄组成，计算了1980—1984年厦门海区大黄鱼的低龄度。
Fuzzy mathematic method was used to analyze the age composition of spawning stock of yellow croaker of-shore Xiamen. This paper calculated the degree of low-age in 1980-1984.
旁边的图表显示了六个国家中各年龄组在劳动力组成中的比例。
The accompanying charts show the work force participation levels by age group for six countries.
我们筛选了随机抽样的由所有年龄组组成的1063个受检者为调查对象。
We screened a random sample of 1063 subjects of all age groups selected by clustering.
我们筛选了随机抽样的由所有年龄组组成的1063个受检者为调查对象。
We screened a random sample of 1063 subjects of all age groups selected by clustering.
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