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 41.5%
2 United States 52 30.4%
3 Japan 12 7%
4 Germany 11 6.4%
5 United Kingdom 7 4.1%
6 Netherlands 5 2.9%
7 Hong Kong 4 2.3%
8 Russia 3 1.8%
9 Korea, Republic of 3 1.8%
10 Singapore 1 0.6%
11 Switzerland 1 0.6%
12 India 1 0.6%