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 183 72.3%
2 Germany 31 12.3%
3 United States 24 9.5%
4 Canada 2 0.8%
5 United Kingdom 2 0.8%
6 France 2 0.8%
7 Norway 2 0.8%
8 Russia 2 0.8%
9 Singapore 2 0.8%
10 Ukraine 1 0.4%
11 Romania 1 0.4%
12 Netherlands 1 0.4%