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 29 32.6%
2 United States 20 22.5%
3 Netherlands 18 20.2%
4 Germany 12 13.5%
5 France 2 2.2%
6 Trinidad and Tobago 2 2.2%
7 United Kingdom 2 2.2%
8 Australia 2 2.2%
9 Kazakhstan 1 1.1%
10 Malaysia 1 1.1%