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 60 44.4%
2 United States 36 26.7%
3 Netherlands 18 13.3%
4 Germany 8 5.9%
5 Hong Kong 3 2.2%
6 Korea, Republic of 3 2.2%
7 Taiwan 3 2.2%
8 United Kingdom 1 0.7%
9 Portugal 1 0.7%
10 Russia 1 0.7%
11 France 1 0.7%