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 167 43.4%
2 United States 143 37.1%
3 Germany 29 7.5%
4 Canada 12 3.1%
5 Taiwan 9 2.3%
6 Korea, Republic of 6 1.6%
7 Hong Kong 4 1%
8 Netherlands 4 1%
9 Australia 3 0.8%
10 Japan 2 0.5%
11 Romania 2 0.5%
12 United Kingdom 2 0.5%
13 Russia 1 0.3%
14 Mexico 1 0.3%