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 193 56.3%
2 United States 63 18.4%
3 Germany 36 10.5%
4 Netherlands 26 7.6%
5 Canada 12 3.5%
6 Singapore 4 1.2%
7 Hong Kong 3 0.9%
8 Sudan 2 0.6%
9 Nigeria 2 0.6%
10 Russia 1 0.3%
11 Brazil 1 0.3%