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 310 65%
2 United States 59 12.4%
3 Netherlands 39 8.2%
4 Germany 35 7.3%
5 Canada 12 2.5%
6 Russia 7 1.5%
7 Taiwan 5 1%
8 Hong Kong 4 0.8%
9 Singapore 2 0.4%
10 Romania 2 0.4%
11 Austria 1 0.2%
12 United Kingdom 1 0.2%