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 60 60%
2 United States 13 13%
3 Germany 8 8%
4 Netherlands 6 6%
5 Russia 3 3%
6 Canada 3 3%
7 United Kingdom 2 2%
8 Korea, Republic of 2 2%
9 France 2 2%
10 Moldova, Republic of 1 1%