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 675 73.1%
2 United States 148 16%
3 Germany 24 2.6%
4 Hong Kong 16 1.7%
5 Netherlands 16 1.7%
6 Canada 15 1.6%
7 Taiwan 10 1.1%
8 Russia 7 0.8%
9 Malaysia 5 0.5%
10 Senegal 2 0.2%
11 Singapore 2 0.2%
12 Korea, Republic of 1 0.1%
13 France 1 0.1%
14 Tunisia 1 0.1%