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 United States 144 46.2%
2 China 118 37.8%
3 Netherlands 18 5.8%
4 Germany 8 2.6%
5 Russia 7 2.2%
6 United Kingdom 5 1.6%
7 Korea, Republic of 3 1%
8 Thailand 2 0.6%
9 Ukraine 2 0.6%
10 India 2 0.6%
11 Japan 1 0.3%
12 France 1 0.3%
13 Canada 1 0.3%