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 35 33.7%
2 China 33 31.7%
3 Taiwan 13 12.5%
4 Germany 8 7.7%
5 Netherlands 8 7.7%
6 Hong Kong 3 2.9%
7 Portugal 1 1%
8 Russia 1 1%
9 United Kingdom 1 1%
10 Canada 1 1%