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 46 51.1%
2 United States 16 17.8%
3 Netherlands 9 10%
4 Germany 6 6.7%
5 Korea, Republic of 5 5.6%
6 Moldova, Republic of 2 2.2%
7 Algeria 2 2.2%
8 Argentina 2 2.2%
9 Russia 1 1.1%
10 Turkey 1 1.1%