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 141 43.3%
2 United States 126 38.7%
3 Germany 24 7.4%
4 Canada 18 5.5%
5 Singapore 4 1.2%
6 Russia 3 0.9%
7 Sweden 2 0.6%
8 Taiwan 2 0.6%
9 India 2 0.6%
10 New Zealand 1 0.3%
11 France 1 0.3%
12 Turkey 1 0.3%
13 United Kingdom 1 0.3%