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 48 36.1%
2 United States 33 24.8%
3 Germany 16 12%
4 Netherlands 16 12%
5 Australia 8 6%
6 Korea, Republic of 6 4.5%
7 Iran, Islamic Republic of 2 1.5%
8 Taiwan 1 0.8%
9 United Kingdom 1 0.8%
10 Canada 1 0.8%
11 Hong Kong 1 0.8%