BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 United States 28 31.8%
2 China 23 26.1%
3 Germany 15 17%
4 Korea, Republic of 7 8%
5 France 5 5.7%
6 Russia 4 4.5%
7 Finland 2 2.3%
8 Canada 2 2.3%
9 Australia 1 1.1%
10 United Kingdom 1 1.1%