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 199 61.6%
2 United States 64 19.8%
3 Germany 19 5.9%
4 Hong Kong 14 4.3%
5 Taiwan 10 3.1%
6 United Kingdom 3 0.9%
7 Sweden 3 0.9%
8 2 0.6%
9 Belgium 2 0.6%
10 Japan 2 0.6%
11 Korea, Republic of 1 0.3%
12 Macao 1 0.3%
13 Portugal 1 0.3%
14 Russia 1 0.3%
15 Switzerland 1 0.3%