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 United States 90 35.3%
2 China 83 32.5%
3 Netherlands 19 7.5%
4 Sweden 14 5.5%
5 France 11 4.3%
6 Germany 8 3.1%
7 Korea, Republic of 5 2%
8 Russia 5 2%
9 Slovenia 4 1.6%
10 Mauritius 3 1.2%
11 Moldova, Republic of 3 1.2%
12 India 2 0.8%
13 Norway 2 0.8%
14 Romania 2 0.8%
15 Switzerland 1 0.4%
16 Ukraine 1 0.4%
17 Canada 1 0.4%
18 Hong Kong 1 0.4%