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 249 58.9%
2 United States 75 17.7%
3 Germany 45 10.6%
4 Canada 18 4.3%
5 Japan 5 1.2%
6 Hong Kong 4 0.9%
7 Singapore 4 0.9%
8 Malaysia 4 0.9%
9 Netherlands 3 0.7%
10 France 3 0.7%
11 Australia 3 0.7%
12 Finland 2 0.5%
13 Ireland 2 0.5%
14 Taiwan 2 0.5%
15 United Kingdom 1 0.2%
16 Philippines 1 0.2%
17 Russia 1 0.2%
18 Korea, Republic of 1 0.2%