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 506 52.5%
2 United States 175 18.2%
3 Netherlands 163 16.9%
4 Germany 52 5.4%
5 Canada 24 2.5%
6 Russia 9 0.9%
7 Thailand 5 0.5%
8 France 5 0.5%
9 India 5 0.5%
10 Ukraine 3 0.3%
11 Singapore 3 0.3%
12 Spain 2 0.2%
13 Norway 2 0.2%
14 Malaysia 2 0.2%
15 Ireland 2 0.2%
16 Italy 2 0.2%
17 2 0.2%
18 Luxembourg 1 0.1%