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 154 59.2%
2 United States 53 20.4%
3 Germany 36 13.8%
4 Russia 4 1.5%
5 Taiwan 3 1.2%
6 Ireland 2 0.8%
7 Netherlands 2 0.8%
8 France 2 0.8%
9 Ukraine 1 0.4%
10 United Kingdom 1 0.4%
11 Singapore 1 0.4%
12 Canada 1 0.4%