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 40.8%
2 United States 24 24.5%
3 Netherlands 13 13.3%
4 Germany 6 6.1%
5 Hong Kong 6 6.1%
6 India 3 3.1%
7 Russia 2 2%
8 Singapore 1 1%
9 Portugal 1 1%
10 1 1%
11 Canada 1 1%