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 226 46.8%
2 China 171 35.4%
3 Germany 39 8.1%
4 Taiwan 12 2.5%
5 Hong Kong 10 2.1%
6 Italy 10 2.1%
7 Sweden 5 1%
8 Singapore 3 0.6%
9 Canada 2 0.4%
10 Turkey 1 0.2%
11 Japan 1 0.2%
12 Malaysia 1 0.2%
13 Netherlands 1 0.2%
14 India 1 0.2%