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 157 43.5%
2 China 144 39.9%
3 Germany 30 8.3%
4 Canada 7 1.9%
5 India 5 1.4%
6 Russia 5 1.4%
7 Singapore 2 0.6%
8 Slovenia 2 0.6%
9 Korea, Republic of 2 0.6%
10 Malaysia 2 0.6%
11 New Zealand 2 0.6%
12 Hong Kong 1 0.3%
13 Mauritius 1 0.3%
14 United Kingdom 1 0.3%