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 58 37.2%
2 United States 49 31.4%
3 Germany 17 10.9%
4 Netherlands 10 6.4%
5 Sweden 5 3.2%
6 France 4 2.6%
7 Philippines 3 1.9%
8 Canada 3 1.9%
9 Singapore 3 1.9%
10 Russia 2 1.3%
11 Moldova, Republic of 2 1.3%