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 182 56.7%
2 United States 55 17.1%
3 Germany 40 12.5%
4 Canada 27 8.4%
5 Russia 4 1.2%
6 France 3 0.9%
7 Sweden 2 0.6%
8 India 2 0.6%
9 Australia 2 0.6%
10 Czech Republic 2 0.6%
11 Netherlands 1 0.3%
12 Spain 1 0.3%