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 48 47.5%
2 China 23 22.8%
3 Netherlands 12 11.9%
4 Germany 6 5.9%
5 Hong Kong 4 4%
6 Taiwan 3 3%
7 Russia 2 2%
8 Singapore 1 1%
9 United Kingdom 1 1%
10 Portugal 1 1%