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 39 45.3%
2 United States 13 15.1%
3 Netherlands 11 12.8%
4 Germany 9 10.5%
5 United Kingdom 5 5.8%
6 Czech Republic 3 3.5%
7 Hong Kong 2 2.3%
8 Japan 2 2.3%
9 France 1 1.2%
10 Australia 1 1.2%