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 218 66.3%
2 Germany 40 12.2%
3 United States 25 7.6%
4 Taiwan 16 4.9%
5 Hong Kong 9 2.7%
6 Canada 3 0.9%
7 Russia 3 0.9%
8 Singapore 2 0.6%
9 Korea, Republic of 2 0.6%
10 Macao 2 0.6%
11 Ukraine 2 0.6%
12 Australia 2 0.6%
13 Ireland 2 0.6%
14 Japan 1 0.3%
15 India 1 0.3%
16 United Kingdom 1 0.3%