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 139 56.3%
2 Germany 41 16.6%
3 United States 30 12.1%
4 Netherlands 14 5.7%
5 Taiwan 10 4%
6 Russia 3 1.2%
7 Norway 2 0.8%
8 Malaysia 2 0.8%
9 India 2 0.8%
10 Japan 1 0.4%
11 Canada 1 0.4%
12 Switzerland 1 0.4%
13 Ukraine 1 0.4%