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 40 42.6%
2 United States 21 22.3%
3 Netherlands 12 12.8%
4 Germany 8 8.5%
5 Canada 4 4.3%
6 Taiwan 3 3.2%
7 Sweden 2 2.1%
8 France 2 2.1%
9 Hong Kong 1 1.1%
10 Malaysia 1 1.1%