BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 333 66.5%
2 United States 116 23.2%
3 Germany 20 4%
4 Hong Kong 10 2%
5 Korea, Republic of 4 0.8%
6 Macao 4 0.8%
7 Russia 3 0.6%
8 Singapore 2 0.4%
9 Sweden 2 0.4%
10 Romania 2 0.4%
11 France 2 0.4%
12 Ukraine 1 0.2%
13 United Kingdom 1 0.2%
14 Netherlands 1 0.2%