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 32 31.7%
2 China 31 30.7%
3 Germany 15 14.9%
4 Canada 5 5%
5 Taiwan 5 5%
6 Hong Kong 4 4%
7 Japan 3 3%
8 Korea, Republic of 1 1%
9 Portugal 1 1%
10 Singapore 1 1%
11 Sweden 1 1%
12 Hungary 1 1%
13 Ukraine 1 1%