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 230 50.3%
2 United States 133 29.1%
3 Germany 33 7.2%
4 Netherlands 25 5.5%
5 Canada 13 2.8%
6 Hong Kong 10 2.2%
7 Singapore 5 1.1%
8 Russia 3 0.7%
9 Turkey 2 0.4%
10 Romania 1 0.2%
11 Italy 1 0.2%
12 Ecuador 1 0.2%