BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 169 62.4%
2 United States 43 15.9%
3 Germany 40 14.8%
4 Japan 5 1.8%
5 Russia 3 1.1%
6 Spain 3 1.1%
7 Peru 2 0.7%
8 Ireland 2 0.7%
9 Italy 1 0.4%
10 Brazil 1 0.4%
11 Moldova, Republic of 1 0.4%
12 Uzbekistan 1 0.4%