BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 48 37.5%
2 United States 40 31.2%
3 Germany 19 14.8%
4 Netherlands 5 3.9%
5 France 4 3.1%
6 Canada 3 2.3%
7 Japan 2 1.6%
8 Singapore 2 1.6%
9 United Kingdom 2 1.6%
10 Russia 1 0.8%
11 Czech Republic 1 0.8%
12 Estonia 1 0.8%