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 60 67.4%
2 Netherlands 11 12.4%
3 United States 6 6.7%
4 Germany 4 4.5%
5 Poland 2 2.2%
6 Japan 2 2.2%
7 Korea, Republic of 2 2.2%
8 Hong Kong 1 1.1%
9 France 1 1.1%