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 34 25.4%
2 United States 31 23.1%
3 Netherlands 30 22.4%
4 Germany 15 11.2%
5 France 9 6.7%
6 Taiwan 4 3%
7 Hong Kong 3 2.2%
8 Czech Republic 3 2.2%
9 Japan 2 1.5%
10 United Kingdom 2 1.5%
11 Russia 1 0.7%