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 36 39.6%
2 United States 23 25.3%
3 Netherlands 13 14.3%
4 Korea, Republic of 7 7.7%
5 Taiwan 5 5.5%
6 Singapore 2 2.2%
7 Germany 2 2.2%
8 Canada 1 1.1%
9 France 1 1.1%
10 Turkey 1 1.1%