其中北京品种的感光性最强，其次是山东品种，雅安品种和南京品种最弱。

Phototonus of Beijing variety was the best, next is Shandong variety, Ya 'an and Nanjing varieties were the worst.

youdao

根据流动人口的职业分布采取配额的方式从北京和南京两座城市共选取了有效被试4301名，其中北京2201名。

According to the rural-to-urban migrants' occupation distribution, we selected from Beijing and Nanjing a total of 4301 participants(2201 from Beijing) by quota.

youdao

根据流动人口的职业分布采取配额的方式从北京和南京两座城市共选取了有效被试4301名，其中北京2201名。

According to the rural-to-urban migrants' occupation distribution, we selected from Beijing and Nanjing a total of 4301 participants(2201 from Beijing) by quota.

youdao