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 42 35.3%
2 United States 37 31.1%
3 Germany 14 11.8%
4 Netherlands 13 10.9%
5 Canada 4 3.4%
6 Hong Kong 3 2.5%
7 Taiwan 2 1.7%
8 United Kingdom 1 0.8%
9 Portugal 1 0.8%
10 Sweden 1 0.8%
11 France 1 0.8%