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 22 29.7%
2 United States 22 29.7%
3 Netherlands 13 17.6%
4 Korea, Republic of 7 9.5%
5 Singapore 3 4.1%
6 United Kingdom 2 2.7%
7 Germany 2 2.7%
8 France 1 1.4%
9 Brazil 1 1.4%
10 Canada 1 1.4%