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 85 39.4%
2 United States 38 17.6%
3 Netherlands 33 15.3%
4 France 20 9.3%
5 Sweden 12 5.6%
6 Germany 10 4.6%
7 Korea, Republic of 6 2.8%
8 Taiwan 6 2.8%
9 Russia 4 1.9%
10 Canada 1 0.5%
11 India 1 0.5%