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 59 50.9%
2 United States 16 13.8%
3 Netherlands 14 12.1%
4 Germany 12 10.3%
5 Taiwan 5 4.3%
6 Russia 4 3.4%
7 United Kingdom 3 2.6%
8 Sweden 1 0.9%
9 Australia 1 0.9%
10 France 1 0.9%