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 71 51.4%
2 United States 27 19.6%
3 Germany 16 11.6%
4 Hong Kong 7 5.1%
5 Canada 6 4.3%
6 Taiwan 3 2.2%
7 Malaysia 2 1.4%
8 Portugal 1 0.7%
9 Russia 1 0.7%
10 Singapore 1 0.7%
11 Sweden 1 0.7%
12 Japan 1 0.7%
13 Ukraine 1 0.7%