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 40 42.1%
2 United States 24 25.3%
3 Germany 16 16.8%
4 Hong Kong 6 6.3%
5 Taiwan 3 3.2%
6 Canada 2 2.1%
7 France 1 1.1%
8 Portugal 1 1.1%
9 Russia 1 1.1%
10 Sweden 1 1.1%