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 255 67.5%
2 United States 42 11.1%
3 Germany 33 8.7%
4 Canada 25 6.6%
5 Netherlands 4 1.1%
6 Singapore 4 1.1%
7 Taiwan 3 0.8%
8 Russia 3 0.8%
9 New Zealand 2 0.5%
10 Hong Kong 2 0.5%
11 Iran, Islamic Republic of 2 0.5%
12 United Kingdom 2 0.5%
13 France 1 0.3%