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 130 53.3%
2 Germany 38 15.6%
3 United States 35 14.3%
4 Canada 18 7.4%
5 Netherlands 11 4.5%
6 Russia 5 2%
7 United Kingdom 2 0.8%
8 Hong Kong 2 0.8%
9 Czech Republic 2 0.8%
10 France 1 0.4%