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 43 30.9%
2 China 29 20.9%
3 Germany 28 20.1%
4 Netherlands 12 8.6%
5 Canada 9 6.5%
6 India 7 5%
7 Turkey 4 2.9%
8 Brazil 3 2.2%
9 Poland 2 1.4%
10 Korea, Republic of 1 0.7%
11 Hong Kong 1 0.7%