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 28 30.1%
2 United States 19 20.4%
3 Netherlands 14 15.1%
4 Russia 8 8.6%
5 Canada 8 8.6%
6 Germany 6 6.5%
7 Viet Nam 3 3.2%
8 Singapore 3 3.2%
9 Sweden 2 2.2%
10 Thailand 1 1.1%
11 Japan 1 1.1%