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 189 56.6%
2 United States 63 18.9%
3 Germany 32 9.6%
4 Taiwan 10 3%
5 Netherlands 8 2.4%
6 Hong Kong 7 2.1%
7 Sweden 4 1.2%
8 Ukraine 2 0.6%
9 Singapore 2 0.6%
10 Spain 2 0.6%
11 Ireland 2 0.6%
12 Japan 2 0.6%
13 Lithuania 2 0.6%
14 Macao 2 0.6%
15 Bolivia, Plurinational State of 2 0.6%
16 Cambodia 2 0.6%
17 France 1 0.3%
18 Russia 1 0.3%
19 United Kingdom 1 0.3%