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 261 63.8%
2 United States 60 14.7%
3 Germany 33 8.1%
4 Netherlands 15 3.7%
5 Canada 12 2.9%
6 Japan 9 2.2%
7 Hong Kong 7 1.7%
8 Russia 6 1.5%
9 Singapore 2 0.5%
10 Turkey 2 0.5%
11 Taiwan 1 0.2%
12 Czech Republic 1 0.2%