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 United States 55 47%
2 China 22 18.8%
3 Germany 13 11.1%
4 Hong Kong 6 5.1%
5 Netherlands 6 5.1%
6 Canada 5 4.3%
7 Taiwan 2 1.7%
8 Czech Republic 2 1.7%
9 France 1 0.9%
10 1 0.9%
11 Austria 1 0.9%
12 Portugal 1 0.9%
13 Ukraine 1 0.9%
14 United Kingdom 1 0.9%