BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 47 37.6%
2 United States 28 22.4%
3 Netherlands 14 11.2%
4 Poland 14 11.2%
5 United Kingdom 6 4.8%
6 Germany 5 4%
7 Iran, Islamic Republic of 5 4%
8 India 2 1.6%
9 Bolivia, Plurinational State of 1 0.8%
10 Korea, Republic of 1 0.8%
11 Hungary 1 0.8%
12 France 1 0.8%