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 217 58.3%
2 United States 62 16.7%
3 Germany 38 10.2%
4 Canada 31 8.3%
5 Netherlands 4 1.1%
6 Russia 3 0.8%
7 Taiwan 3 0.8%
8 Hong Kong 3 0.8%
9 France 3 0.8%
10 Belgium 2 0.5%
11 Singapore 2 0.5%
12 Sweden 1 0.3%
13 1 0.3%
14 Ireland 1 0.3%
15 Malaysia 1 0.3%