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 United States 131 48%
2 China 88 32.2%
3 Netherlands 24 8.8%
4 Russia 7 2.6%
5 Germany 7 2.6%
6 Korea, Republic of 4 1.5%
7 Australia 2 0.7%
8 Japan 2 0.7%
9 Hong Kong 2 0.7%
10 Singapore 2 0.7%
11 United Kingdom 2 0.7%
12 India 1 0.4%
13 Kyrgyzstan 1 0.4%