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 88 42.3%
2 China 56 26.9%
3 Netherlands 29 13.9%
4 Germany 14 6.7%
5 Canada 8 3.8%
6 Russia 5 2.4%
7 Hong Kong 2 1%
8 Finland 2 1%
9 France 1 0.5%
10 Moldova, Republic of 1 0.5%
11 Spain 1 0.5%
12 United Kingdom 1 0.5%