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 158 64.2%
2 United States 35 14.2%
3 Germany 24 9.8%
4 Korea, Republic of 6 2.4%
5 United Kingdom 4 1.6%
6 Canada 3 1.2%
7 Russia 3 1.2%
8 Singapore 2 0.8%
9 2 0.8%
10 Brazil 2 0.8%
11 Netherlands 2 0.8%
12 Norway 2 0.8%
13 Portugal 2 0.8%
14 Sweden 1 0.4%