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 51 37.2%
2 United States 45 32.8%
3 Germany 17 12.4%
4 Netherlands 9 6.6%
5 Hong Kong 7 5.1%
6 Taiwan 3 2.2%
7 Canada 2 1.5%
8 United Kingdom 1 0.7%
9 Portugal 1 0.7%
10 Russia 1 0.7%