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 42 48.3%
2 Netherlands 14 16.1%
3 United States 12 13.8%
4 Germany 8 9.2%
5 Singapore 3 3.4%
6 Switzerland 2 2.3%
7 Japan 2 2.3%
8 Malaysia 1 1.1%
9 France 1 1.1%
10 United Kingdom 1 1.1%
11 Canada 1 1.1%