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 105 44.7%
2 United States 90 38.3%
3 Germany 8 3.4%
4 Netherlands 6 2.6%
5 Taiwan 6 2.6%
6 Hong Kong 5 2.1%
7 Canada 4 1.7%
8 Japan 2 0.9%
9 Korea, Republic of 2 0.9%
10 Pakistan 1 0.4%
11 Portugal 1 0.4%
12 Russia 1 0.4%
13 Sweden 1 0.4%
14 Switzerland 1 0.4%
15 Ukraine 1 0.4%
16 United Kingdom 1 0.4%