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 56 44.4%
2 China 31 24.6%
3 Germany 16 12.7%
4 Netherlands 7 5.6%
5 Canada 5 4%
6 Hong Kong 4 3.2%
7 Taiwan 3 2.4%
8 France 2 1.6%
9 United Kingdom 1 0.8%
10 Portugal 1 0.8%