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 83 55.3%
2 United States 20 13.3%
3 Netherlands 13 8.7%
4 Germany 8 5.3%
5 France 7 4.7%
6 Sweden 6 4%
7 Russia 5 3.3%
8 United Kingdom 3 2%
9 Singapore 2 1.3%
10 Czech Republic 2 1.3%
11 Norway 1 0.7%