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 29 34.1%
2 United States 20 23.5%
3 Netherlands 10 11.8%
4 Canada 8 9.4%
5 Sweden 6 7.1%
6 Moldova, Republic of 4 4.7%
7 Germany 3 3.5%
8 Turkey 3 3.5%
9 Singapore 2 2.4%