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 United States 246 50.3%
2 China 171 35%
3 Germany 35 7.2%
4 Taiwan 10 2%
5 Hong Kong 6 1.2%
6 Japan 4 0.8%
7 Romania 3 0.6%
8 Singapore 3 0.6%
9 Tunisia 3 0.6%
10 South Africa 2 0.4%
11 Sweden 2 0.4%
12 Kyrgyzstan 1 0.2%
13 France 1 0.2%
14 Viet Nam 1 0.2%
15 Australia 1 0.2%