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 201 65.5%
2 United States 52 16.9%
3 Germany 34 11.1%
4 United Kingdom 5 1.6%
5 Taiwan 3 1%
6 Sweden 2 0.7%
7 Switzerland 2 0.7%
8 Hong Kong 2 0.7%
9 Bulgaria 2 0.7%
10 Belgium 1 0.3%
11 France 1 0.3%
12 Malaysia 1 0.3%
13 Singapore 1 0.3%