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 170 62%
2 United States 42 15.3%
3 Germany 38 13.9%
4 Canada 12 4.4%
5 Belgium 2 0.7%
6 2 0.7%
7 Sweden 2 0.7%
8 Switzerland 1 0.4%
9 Argentina 1 0.4%
10 Australia 1 0.4%
11 Netherlands 1 0.4%
12 Russia 1 0.4%
13 France 1 0.4%