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 58 52.7%
2 United States 31 28.2%
3 Germany 7 6.4%
4 Hong Kong 3 2.7%
5 Iran, Islamic Republic of 2 1.8%
6 Singapore 2 1.8%
7 Taiwan 2 1.8%
8 United Kingdom 2 1.8%
9 Netherlands 1 0.9%
10 Portugal 1 0.9%
11 Saudi Arabia 1 0.9%