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 42 28.8%
2 China 40 27.4%
3 Netherlands 18 12.3%
4 Germany 14 9.6%
5 Turkey 9 6.2%
6 Korea, Republic of 6 4.1%
7 Japan 5 3.4%
8 Canada 4 2.7%
9 France 2 1.4%
10 Iran, Islamic Republic of 2 1.4%
11 Hong Kong 1 0.7%
12 Austria 1 0.7%
13 Denmark 1 0.7%
14 Pakistan 1 0.7%