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 139 57.4%
2 United States 67 27.7%
3 Germany 10 4.1%
4 Hong Kong 9 3.7%
5 Taiwan 4 1.7%
6 Canada 3 1.2%
7 United Kingdom 2 0.8%
8 Malaysia 2 0.8%
9 Portugal 1 0.4%
10 Singapore 1 0.4%
11 Sweden 1 0.4%
12 Japan 1 0.4%
13 Australia 1 0.4%
14 Ukraine 1 0.4%