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 540 70.2%
2 United States 135 17.6%
3 Germany 36 4.7%
4 Taiwan 22 2.9%
5 United Kingdom 12 1.6%
6 Hong Kong 5 0.7%
7 Philippines 4 0.5%
8 Korea, Republic of 3 0.4%
9 Singapore 3 0.4%
10 Canada 2 0.3%
11 Colombia 2 0.3%
12 Finland 2 0.3%
13 Japan 1 0.1%
14 Saudi Arabia 1 0.1%
15 South Africa 1 0.1%