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 169 75.4%
2 United States 31 13.8%
3 Germany 7 3.1%
4 Taiwan 4 1.8%
5 Hong Kong 3 1.3%
6 Netherlands 3 1.3%
7 2 0.9%
8 United Kingdom 1 0.4%
9 Portugal 1 0.4%
10 Russia 1 0.4%
11 Singapore 1 0.4%
12 Sweden 1 0.4%