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 87 62.1%
2 United States 26 18.6%
3 Germany 7 5%
4 Hong Kong 7 5%
5 Netherlands 4 2.9%
6 Iran, Islamic Republic of 2 1.4%
7 Russia 2 1.4%
8 Taiwan 2 1.4%
9 Macao 1 0.7%
10 Portugal 1 0.7%
11 France 1 0.7%