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 39 51.3%
2 United States 17 22.4%
3 Germany 7 9.2%
4 Hong Kong 3 3.9%
5 Taiwan 3 3.9%
6 Netherlands 2 2.6%
7 Portugal 1 1.3%
8 Russia 1 1.3%
9 Singapore 1 1.3%
10 Ireland 1 1.3%
11 Estonia 1 1.3%