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 41 36.3%
2 United States 28 24.8%
3 Germany 15 13.3%
4 Sweden 9 8%
5 Hong Kong 6 5.3%
6 Canada 5 4.4%
7 Netherlands 3 2.7%
8 Taiwan 2 1.8%
9 Czech Republic 2 1.8%
10 Portugal 1 0.9%
11 Singapore 1 0.9%