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 185 63.4%
2 United States 56 19.2%
3 Germany 37 12.7%
4 Russia 3 1%
5 Switzerland 2 0.7%
6 Netherlands 2 0.7%
7 Hong Kong 2 0.7%
8 Czech Republic 2 0.7%
9 France 2 0.7%
10 Moldova, Republic of 1 0.3%