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 54 56.8%
2 Netherlands 11 11.6%
3 China 8 8.4%
4 Germany 7 7.4%
5 Korea, Republic of 5 5.3%
6 Denmark 3 3.2%
7 France 2 2.1%
8 Brazil 2 2.1%
9 Canada 1 1.1%
10 Hong Kong 1 1.1%
11 Japan 1 1.1%