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 United States 32 38.6%
2 Germany 11 13.3%
3 Netherlands 11 13.3%
4 China 9 10.8%
5 Australia 5 6%
6 France 4 4.8%
7 Iran, Islamic Republic of 3 3.6%
8 Spain 2 2.4%
9 Canada 2 2.4%
10 United Kingdom 2 2.4%
11 Taiwan 1 1.2%
12 Korea, Republic of 1 1.2%