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 92 47.2%
2 United States 53 27.2%
3 Germany 19 9.7%
4 Netherlands 13 6.7%
5 Norway 3 1.5%
6 Iran, Islamic Republic of 2 1%
7 Korea, Republic of 2 1%
8 Denmark 2 1%
9 Egypt 2 1%
10 Taiwan 2 1%
11 Thailand 2 1%
12 Ukraine 1 0.5%
13 France 1 0.5%
14 Singapore 1 0.5%