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 64 32.7%
2 China 63 32.1%
3 Netherlands 19 9.7%
4 Taiwan 16 8.2%
5 Germany 9 4.6%
6 Hong Kong 9 4.6%
7 France 4 2%
8 Singapore 3 1.5%
9 Russia 2 1%
10 India 2 1%
11 Iran, Islamic Republic of 2 1%
12 Korea, Republic of 1 0.5%
13 Brazil 1 0.5%
14 United Kingdom 1 0.5%