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 49 45%
2 United States 20 18.3%
3 Germany 7 6.4%
4 Hong Kong 7 6.4%
5 Netherlands 6 5.5%
6 Singapore 3 2.8%
7 Japan 3 2.8%
8 Canada 3 2.8%
9 France 3 2.8%
10 Korea, Republic of 2 1.8%
11 Turkey 2 1.8%
12 Serbia 2 1.8%
13 Ireland 1 0.9%
14 Czech Republic 1 0.9%