classification of age
按年龄分组儿童 children age group 按年龄分组 classification of age ; According To Age Group 按年龄生育率 age-specificfertilityrate ; specificfertilityrate ..
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按年龄分组的人口数 population by age group
按年龄分组比赛 age group swimming
按年龄分组的性比例 ratio by age groups ; sex ratio by age groups
·2,447,543篇论文数据，部分数据来源于NoteExpress
参加者按年龄分组。
Participants were categorized according to age.
《牛津词典》
受试者按年龄分组进行统计和比较。
Subjects are divided into groups by age, with the result statistics and compared.
youdao
学童是按年龄分组施教的。
School-children are taught according to age groups.
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