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 30 34.5%
2 United States 20 23%
3 Germany 16 18.4%
4 Hong Kong 6 6.9%
5 Taiwan 3 3.4%
6 Canada 3 3.4%
7 Czech Republic 2 2.3%
8 France 1 1.1%
9 Ukraine 1 1.1%
10 Japan 1 1.1%
11 Portugal 1 1.1%
12 Russia 1 1.1%
13 Spain 1 1.1%
14 Sweden 1 1.1%