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 216 57%
2 United States 110 29%
3 Germany 31 8.2%
4 Russia 7 1.8%
5 Taiwan 3 0.8%
6 2 0.5%
7 Hong Kong 2 0.5%
8 Mexico 2 0.5%
9 Netherlands 2 0.5%
10 Czech Republic 1 0.3%
11 Italy 1 0.3%
12 Luxembourg 1 0.3%
13 Singapore 1 0.3%