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 230 54.8%
2 United States 114 27.1%
3 Germany 26 6.2%
4 Taiwan 15 3.6%
5 Canada 11 2.6%
6 Singapore 5 1.2%
7 Hong Kong 5 1.2%
8 Russia 3 0.7%
9 Switzerland 2 0.5%
10 Japan 2 0.5%
11 Latvia 2 0.5%
12 Macao 2 0.5%
13 Malaysia 2 0.5%
14 Netherlands 1 0.2%