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 200 57.8%
2 United States 72 20.8%
3 Germany 33 9.5%
4 Canada 14 4%
5 Netherlands 7 2%
6 Singapore 5 1.4%
7 Australia 3 0.9%
8 Russia 3 0.9%
9 Austria 2 0.6%
10 Korea, Republic of 2 0.6%
11 Sweden 2 0.6%
12 Taiwan 1 0.3%
13 Ukraine 1 0.3%
14 United Kingdom 1 0.3%