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 140 68.6%
2 United States 25 12.3%
3 Germany 18 8.8%
4 Hong Kong 6 2.9%
5 Japan 3 1.5%
6 Korea, Republic of 2 1%
7 Malaysia 2 1%
8 Netherlands 2 1%
9 Russia 2 1%
10 Sweden 2 1%
11 Taiwan 1 0.5%
12 Thailand 1 0.5%