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 30 23.8%
2 United States 27 21.4%
3 Netherlands 22 17.5%
4 Russia 8 6.3%
5 Germany 8 6.3%
6 Canada 8 6.3%
7 Sweden 5 4%
8 Korea, Republic of 4 3.2%
9 Singapore 3 2.4%
10 United Kingdom 3 2.4%
11 Hong Kong 2 1.6%
12 Japan 2 1.6%
13 Czech Republic 1 0.8%
14 France 1 0.8%
15 Malaysia 1 0.8%
16 Thailand 1 0.8%