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 45 46.4%
2 China 22 22.7%
3 Netherlands 12 12.4%
4 Germany 6 6.2%
5 Hong Kong 3 3.1%
6 Taiwan 3 3.1%
7 2 2.1%
8 Canada 1 1%
9 United Kingdom 1 1%
10 Portugal 1 1%
11 Russia 1 1%