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 147 60.7%
2 United States 39 16.1%
3 Netherlands 20 8.3%
4 Russia 8 3.3%
5 Canada 7 2.9%
6 Germany 6 2.5%
7 Sweden 5 2.1%
8 Singapore 3 1.2%
9 Czech Republic 2 0.8%
10 Hong Kong 2 0.8%
11 Japan 1 0.4%
12 Malaysia 1 0.4%
13 United Kingdom 1 0.4%