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 55%
2 United States 77 18.4%
3 Germany 36 8.6%
4 Netherlands 36 8.6%
5 Canada 16 3.8%
6 Malaysia 4 1%
7 Singapore 3 0.7%
8 Sweden 2 0.5%
9 Switzerland 2 0.5%
10 Taiwan 2 0.5%
11 Cambodia 2 0.5%
12 Russia 2 0.5%
13 Hong Kong 2 0.5%
14 Japan 2 0.5%
15 France 1 0.2%
16 Ukraine 1 0.2%