BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 66 47.5%
2 United States 30 21.6%
3 Germany 14 10.1%
4 Hong Kong 11 7.9%
5 Netherlands 10 7.2%
6 Canada 2 1.4%
7 United Kingdom 2 1.4%
8 Portugal 1 0.7%
9 Singapore 1 0.7%
10 Malaysia 1 0.7%
11 Czech Republic 1 0.7%