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 224 60.1%
2 United States 86 23.1%
3 Germany 37 9.9%
4 Hong Kong 8 2.1%
5 Russia 5 1.3%
6 Czech Republic 2 0.5%
7 France 2 0.5%
8 Netherlands 2 0.5%
9 Switzerland 2 0.5%
10 Ukraine 2 0.5%
11 Singapore 1 0.3%
12 Malaysia 1 0.3%
13 Mexico 1 0.3%