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 173 53.6%
2 United States 76 23.5%
3 Germany 34 10.5%
4 Canada 12 3.7%
5 Taiwan 4 1.2%
6 Netherlands 3 0.9%
7 Russia 3 0.9%
8 Singapore 3 0.9%
9 Australia 3 0.9%
10 Macao 2 0.6%
11 Hong Kong 2 0.6%
12 India 2 0.6%
13 Japan 2 0.6%
14 Korea, Republic of 1 0.3%
15 Moldova, Republic of 1 0.3%
16 Tanzania, United Republic of 1 0.3%
17 United Kingdom 1 0.3%