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 155 47.7%
2 China 108 33.2%
3 Netherlands 10 3.1%
4 Russia 7 2.2%
5 Singapore 6 1.8%
6 Sweden 6 1.8%
7 India 6 1.8%
8 Poland 4 1.2%
9 Brazil 3 0.9%
10 France 3 0.9%
11 Germany 3 0.9%
12 Turkey 3 0.9%
13 Spain 2 0.6%
14 United Kingdom 2 0.6%
15 Iran, Islamic Republic of 2 0.6%
16 Korea, Republic of 2 0.6%
17 Romania 1 0.3%
18 Japan 1 0.3%
19 Ukraine 1 0.3%