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 190 58.5%
2 United States 48 14.8%
3 Germany 37 11.4%
4 Netherlands 20 6.2%
5 Taiwan 8 2.5%
6 Canada 5 1.5%
7 Russia 4 1.2%
8 Spain 2 0.6%
9 Sweden 2 0.6%
10 United Kingdom 2 0.6%
11 Australia 2 0.6%
12 Norway 2 0.6%
13 Hong Kong 2 0.6%
14 Korea, Republic of 1 0.3%