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 United States 70 41.7%
2 China 35 20.8%
3 Germany 25 14.9%
4 Netherlands 13 7.7%
5 Russia 8 4.8%
6 Singapore 5 3%
7 United Kingdom 5 3%
8 France 4 2.4%
9 Australia 1 0.6%
10 Brazil 1 0.6%
11 Spain 1 0.6%