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 232 48.3%
2 United States 137 28.5%
3 Germany 36 7.5%
4 Canada 30 6.2%
5 Singapore 9 1.9%
6 Russia 8 1.7%
7 Taiwan 7 1.5%
8 Hong Kong 6 1.2%
9 Japan 5 1%
10 Australia 3 0.6%
11 Turkey 2 0.4%
12 Ukraine 2 0.4%
13 United Kingdom 1 0.2%
14 Switzerland 1 0.2%
15 Korea, Republic of 1 0.2%