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 34 31.2%
2 United States 32 29.4%
3 Germany 13 11.9%
4 Japan 9 8.3%
5 Hong Kong 6 5.5%
6 Taiwan 4 3.7%
7 Singapore 3 2.8%
8 Canada 2 1.8%
9 Norway 2 1.8%
10 Portugal 1 0.9%
11 Russia 1 0.9%
12 Netherlands 1 0.9%
13 United Kingdom 1 0.9%