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 172 55.7%
2 United States 58 18.8%
3 Germany 41 13.3%
4 Canada 23 7.4%
5 Taiwan 3 1%
6 Singapore 2 0.6%
7 Netherlands 2 0.6%
8 Hong Kong 2 0.6%
9 Italy 2 0.6%
10 Mauritius 1 0.3%
11 Russia 1 0.3%
12 Austria 1 0.3%
13 Spain 1 0.3%