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 184 59.7%
2 United States 54 17.5%
3 Germany 37 12%
4 Canada 18 5.8%
5 Czech Republic 4 1.3%
6 Russia 2 0.6%
7 Slovakia 2 0.6%
8 Turkey 2 0.6%
9 United Kingdom 2 0.6%
10 Brazil 1 0.3%
11 Ireland 1 0.3%
12 Moldova, Republic of 1 0.3%