BPG致力于知识的发现和传播
Total Visits of This Article
2019 | 总访问次数
排名 国家/地区 数量 占比
1 United States 52 52.5%
2 China 23 23.2%
3 France 12 12.1%
4 Germany 4 4%
5 Norway 2 2%
6 Russia 1 1%
7 Singapore 1 1%
8 Switzerland 1 1%
9 Taiwan 1 1%
10 Japan 1 1%
11 Macao 1 1%