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 170 59%
2 United States 59 20.5%
3 Germany 39 13.5%
4 United Kingdom 5 1.7%
5 Netherlands 3 1%
6 Russia 3 1%
7 Canada 2 0.7%
8 Japan 2 0.7%
9 Spain 2 0.7%
10 Moldova, Republic of 1 0.3%
11 Australia 1 0.3%
12 Singapore 1 0.3%