BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 49 66.2%
2 China 9 12.2%
3 Germany 4 5.4%
4 Taiwan 4 5.4%
5 United Kingdom 3 4.1%
6 France 2 2.7%
7 Moldova, Republic of 1 1.4%
8 Poland 1 1.4%
9 Estonia 1 1.4%