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 150 56.4%
2 Germany 47 17.7%
3 United States 27 10.2%
4 Netherlands 25 9.4%
5 United Kingdom 6 2.3%
6 Russia 2 0.8%
7 Sweden 2 0.8%
8 Korea, Republic of 2 0.8%
9 Malaysia 2 0.8%
10 France 1 0.4%
11 Brazil 1 0.4%
12 Singapore 1 0.4%