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 57 38.3%
2 United States 48 32.2%
3 Netherlands 18 12.1%
4 Russia 9 6%
5 Canada 6 4%
6 Hong Kong 3 2%
7 Japan 2 1.3%
8 Czech Republic 2 1.3%
9 Germany 2 1.3%
10 United Kingdom 2 1.3%