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 30 33.3%
2 China 21 23.3%
3 Netherlands 17 18.9%
4 Germany 14 15.6%
5 France 2 2.2%
6 India 2 2.2%
7 Korea, Republic of 1 1.1%
8 Singapore 1 1.1%
9 United Kingdom 1 1.1%
10 Hong Kong 1 1.1%