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 33 26.6%
2 United States 31 25%
3 Netherlands 22 17.7%
4 Germany 6 4.8%
5 Japan 5 4%
6 Korea, Republic of 5 4%
7 Brazil 4 3.2%
8 Iran, Islamic Republic of 4 3.2%
9 Colombia 3 2.4%
10 Russia 3 2.4%
11 Sweden 2 1.6%
12 Taiwan 2 1.6%
13 Turkey 2 1.6%
14 France 1 0.8%
15 Italy 1 0.8%