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 191 58.6%
2 United States 46 14.1%
3 Germany 34 10.4%
4 Korea, Republic of 28 8.6%
5 Canada 10 3.1%
6 Ireland 5 1.5%
7 Russia 4 1.2%
8 United Kingdom 3 0.9%
9 Singapore 2 0.6%
10 Netherlands 2 0.6%
11 Uzbekistan 1 0.3%