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 38 38.8%
2 United States 18 18.4%
3 Germany 15 15.3%
4 Canada 10 10.2%
5 United Kingdom 4 4.1%
6 Hong Kong 3 3.1%
7 Taiwan 3 3.1%
8 Ukraine 2 2%
9 Czech Republic 2 2%
10 France 1 1%
11 Portugal 1 1%
12 Sweden 1 1%