age structure of population 种群的年龄结构 ; 人口年龄结构 ; 人口年龄构成
age structure of human resources 人力资源年龄结构
Culm-age structure of the stands 林分秆龄结构
structure of age 年龄结构
the structure of age 年龄结构
structure of sex & age 性别年龄结构
The age structure of rhizome is an increasing model at length and weight at the end of growing season.
在生长季末,种群中根茎在累计长度和重量上均为增长型年龄结构。
At the same time of population census, the age structure of wintering common cranes had also been examined.
在进行种群数量调查的同时,还对越冬灰鹤种群的年龄结构进行了探讨。
Age-standardized death rate: death rate corrected so as to allow for the effects of the differences in age structure of a population.
年龄标准化死亡率:根据(一国)人口年龄结构差异的影响修正的死亡率。
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