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 China 67 50.4%
2 United States 21 15.8%
3 Korea, Republic of 15 11.3%
4 Netherlands 6 4.5%
5 France 6 4.5%
6 Taiwan 6 4.5%
7 Czech Republic 5 3.8%
8 Germany 3 2.3%
9 Qatar 2 1.5%
10 Canada 1 0.8%
11 Philippines 1 0.8%