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 167 44.4%
2 United States 145 38.6%
3 Germany 42 11.2%
4 Russia 7 1.9%
5 Ireland 3 0.8%
6 Netherlands 2 0.5%
7 Hong Kong 2 0.5%
8 Australia 2 0.5%
9 Canada 2 0.5%
10 Sweden 2 0.5%
11 Singapore 1 0.3%
12 France 1 0.3%