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 223 77.2%
2 United States 30 10.4%
3 Germany 16 5.5%
4 Canada 5 1.7%
5 Hong Kong 4 1.4%
6 Norway 2 0.7%
7 Taiwan 2 0.7%
8 United Kingdom 2 0.7%
9 Ukraine 1 0.3%
10 Portugal 1 0.3%
11 Russia 1 0.3%
12 Netherlands 1 0.3%
13 Czech Republic 1 0.3%