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 25 53.2%
2 Germany 11 23.4%
3 United States 5 10.6%
4 Lithuania 2 4.3%
5 Netherlands 1 2.1%
6 United Kingdom 1 2.1%
7 Hong Kong 1 2.1%
8 Korea, Republic of 1 2.1%