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 91 37%
2 United States 51 20.7%
3 Germany 31 12.6%
4 Netherlands 12 4.9%
5 Singapore 10 4.1%
6 Russia 9 3.7%
7 United Kingdom 8 3.3%
8 Korea, Republic of 4 1.6%
9 Finland 3 1.2%
10 Japan 3 1.2%
11 Hong Kong 3 1.2%
12 Canada 3 1.2%
13 Taiwan 3 1.2%
14 Brazil 2 0.8%
15 Czech Republic 2 0.8%
16 India 2 0.8%
17 Iran, Islamic Republic of 2 0.8%
18 Mexico 2 0.8%
19 Spain 2 0.8%
20 Sweden 2 0.8%
21 Turkey 1 0.4%