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 186 60.6%
2 United States 60 19.5%
3 Germany 34 11.1%
4 Canada 18 5.9%
5 Singapore 3 1%
6 Netherlands 2 0.7%
7 Russia 1 0.3%
8 United Kingdom 1 0.3%
9 Hong Kong 1 0.3%
10 Moldova, Republic of 1 0.3%