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 206 50.4%
2 United States 86 21%
3 Germany 28 6.8%
4 Canada 28 6.8%
5 Netherlands 22 5.4%
6 Hong Kong 7 1.7%
7 United Kingdom 6 1.5%
8 Ireland 4 1%
9 Singapore 4 1%
10 France 3 0.7%
11 Iran, Islamic Republic of 3 0.7%
12 India 2 0.5%
13 Poland 2 0.5%
14 Sweden 2 0.5%
15 Switzerland 2 0.5%
16 Taiwan 2 0.5%
17 Spain 1 0.2%
18 New Zealand 1 0.2%