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 195 52.1%
2 United States 117 31.3%
3 Germany 34 9.1%
4 Netherlands 8 2.1%
5 Switzerland 5 1.3%
6 Hong Kong 4 1.1%
7 Japan 3 0.8%
8 United Kingdom 2 0.5%
9 Italy 2 0.5%
10 Taiwan 2 0.5%
11 Turkey 1 0.3%
12 Canada 1 0.3%