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 United States 44 37.9%
2 China 24 20.7%
3 Germany 13 11.2%
4 Netherlands 12 10.3%
5 Hong Kong 8 6.9%
6 Canada 5 4.3%
7 Malaysia 2 1.7%
8 Czech Republic 2 1.7%
9 Taiwan 2 1.7%
10 Ukraine 1 0.9%
11 Japan 1 0.9%
12 Portugal 1 0.9%
13 Singapore 1 0.9%