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 112 50.7%
2 United States 57 25.8%
3 Germany 28 12.7%
4 Spain 6 2.7%
5 Russia 4 1.8%
6 Japan 3 1.4%
7 Singapore 2 0.9%
8 Canada 2 0.9%
9 Taiwan 2 0.9%
10 United Kingdom 2 0.9%
11 Switzerland 1 0.5%
12 Australia 1 0.5%
13 Netherlands 1 0.5%