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 302 66.4%
2 United States 71 15.6%
3 Germany 29 6.4%
4 Canada 25 5.5%
5 Taiwan 7 1.5%
6 Japan 4 0.9%
7 Russia 4 0.9%
8 Hong Kong 3 0.7%
9 United Kingdom 3 0.7%
10 Ukraine 2 0.4%
11 Singapore 2 0.4%
12 Netherlands 2 0.4%
13 Brazil 1 0.2%