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 206 61.9%
2 United States 77 23.1%
3 Germany 34 10.2%
4 Korea, Republic of 7 2.1%
5 Moldova, Republic of 2 0.6%
6 Singapore 2 0.6%
7 Sweden 1 0.3%
8 Taiwan 1 0.3%
9 Portugal 1 0.3%
10 Russia 1 0.3%
11 Mauritius 1 0.3%