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 207 60.7%
2 United States 48 14.1%
3 Germany 37 10.9%
4 Canada 21 6.2%
5 Taiwan 9 2.6%
6 Russia 4 1.2%
7 Singapore 3 0.9%
8 Australia 2 0.6%
9 Hong Kong 2 0.6%
10 Ireland 2 0.6%
11 Netherlands 2 0.6%
12 Poland 2 0.6%
13 Romania 1 0.3%
14 Turkey 1 0.3%