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 74 37.6%
2 United States 59 29.9%
3 Sweden 16 8.1%
4 Netherlands 10 5.1%
5 Korea, Republic of 9 4.6%
6 France 8 4.1%
7 Russia 6 3%
8 Germany 5 2.5%
9 India 3 1.5%
10 Moldova, Republic of 3 1.5%
11 Portugal 2 1%
12 Mauritius 1 0.5%
13 Norway 1 0.5%