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 60 41.4%
2 United States 27 18.6%
3 Netherlands 16 11%
4 France 12 8.3%
5 Germany 9 6.2%
6 Russia 4 2.8%
7 Singapore 3 2.1%
8 Sweden 3 2.1%
9 United Kingdom 2 1.4%
10 Japan 2 1.4%
11 Norway 2 1.4%
12 Czech Republic 2 1.4%
13 Australia 2 1.4%
14 Canada 1 0.7%