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 186 60.2%
2 United States 54 17.5%
3 Germany 33 10.7%
4 Canada 20 6.5%
5 Hong Kong 2 0.6%
6 India 2 0.6%
7 Japan 2 0.6%
8 Netherlands 2 0.6%
9 Romania 2 0.6%
10 Singapore 2 0.6%
11 Switzerland 2 0.6%
12 Russia 1 0.3%
13 Mauritius 1 0.3%