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 71 26.6%
2 China 54 20.2%
3 Germany 20 7.5%
4 India 19 7.1%
5 Netherlands 15 5.6%
6 Portugal 12 4.5%
7 Japan 8 3%
8 Mexico 8 3%
9 Italy 6 2.2%
10 Korea, Republic of 5 1.9%
11 Iraq 4 1.5%
12 Hong Kong 4 1.5%
13 Ecuador 4 1.5%
14 Chile 4 1.5%
15 Sweden 4 1.5%
16 Tanzania, United Republic of 3 1.1%
17 Thailand 3 1.1%
18 United Kingdom 3 1.1%
19 Spain 2 0.7%
20 Viet Nam 2 0.7%
21 Turkey 2 0.7%
22 Saudi Arabia 2 0.7%
23 Canada 2 0.7%
24 France 2 0.7%
25 Romania 2 0.7%
26 Russia 1 0.4%
27 Ethiopia 1 0.4%
28 Iran, Islamic Republic of 1 0.4%
29 Singapore 1 0.4%
30 Switzerland 1 0.4%
31 Taiwan 1 0.4%