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 48 50%
2 Germany 15 15.6%
3 United States 11 11.5%
4 Korea, Republic of 7 7.3%
5 Netherlands 4 4.2%
6 Slovakia 3 3.1%
7 Hong Kong 2 2.1%
8 India 2 2.1%
9 Taiwan 2 2.1%
10 France 1 1%
11 Sweden 1 1%