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 97 63.8%
2 United States 28 18.4%
3 Netherlands 13 8.6%
4 Senegal 3 2%
5 Canada 3 2%
6 Sweden 2 1.3%
7 France 2 1.3%
8 Germany 1 0.7%
9 Moldova, Republic of 1 0.7%
10 Singapore 1 0.7%
11 Russia 1 0.7%