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 217 64.6%
2 United States 51 15.2%
3 Germany 44 13.1%
4 Russia 6 1.8%
5 Hong Kong 4 1.2%
6 India 3 0.9%
7 Canada 2 0.6%
8 Netherlands 2 0.6%
9 United Kingdom 2 0.6%
10 Singapore 1 0.3%
11 Ukraine 1 0.3%
12 Czech Republic 1 0.3%
13 Estonia 1 0.3%
14 Korea, Republic of 1 0.3%