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 58 41.4%
2 United States 25 17.9%
3 Netherlands 24 17.1%
4 Germany 10 7.1%
5 France 5 3.6%
6 Russia 4 2.9%
7 Ukraine 3 2.1%
8 Taiwan 2 1.4%
9 Thailand 2 1.4%
10 Malaysia 2 1.4%
11 Canada 1 0.7%
12 Norway 1 0.7%
13 Japan 1 0.7%
14 Sweden 1 0.7%
15 United Kingdom 1 0.7%