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 216 65.5%
2 Germany 55 16.7%
3 United States 35 10.6%
4 Russia 9 2.7%
5 Taiwan 2 0.6%
6 United Kingdom 2 0.6%
7 India 2 0.6%
8 Canada 2 0.6%
9 Netherlands 2 0.6%
10 Moldova, Republic of 1 0.3%
11 Hong Kong 1 0.3%
12 Finland 1 0.3%
13 Ukraine 1 0.3%
14 Viet Nam 1 0.3%