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 236 51.5%
2 United States 143 31.2%
3 Germany 35 7.6%
4 Canada 16 3.5%
5 Taiwan 8 1.7%
6 Ireland 7 1.5%
7 Australia 3 0.7%
8 Finland 2 0.4%
9 France 2 0.4%
10 Korea, Republic of 2 0.4%
11 Netherlands 2 0.4%
12 Sweden 2 0.4%