BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 330 68.3%
2 United States 86 17.8%
3 Germany 15 3.1%
4 Netherlands 11 2.3%
5 Hong Kong 10 2.1%
6 Portugal 5 1%
7 Taiwan 4 0.8%
8 Japan 4 0.8%
9 Ukraine 3 0.6%
10 Senegal 3 0.6%
11 Singapore 2 0.4%
12 Russia 2 0.4%
13 United Kingdom 2 0.4%
14 France 2 0.4%
15 Peru 1 0.2%
16 Korea, Republic of 1 0.2%
17 Moldova, Republic of 1 0.2%
18 Canada 1 0.2%