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 108 55.7%
2 China 41 21.1%
3 Germany 17 8.8%
4 France 6 3.1%
5 Canada 6 3.1%
6 Russia 5 2.6%
7 United Kingdom 4 2.1%
8 Hong Kong 3 1.5%
9 New Zealand 2 1%
10 Taiwan 2 1%