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 United States 34 34.3%
2 Germany 25 25.3%
3 Netherlands 18 18.2%
4 China 10 10.1%
5 France 3 3%
6 Egypt 2 2%
7 India 2 2%
8 Korea, Republic of 1 1%
9 Saudi Arabia 1 1%
10 South Africa 1 1%
11 Taiwan 1 1%
12 Thailand 1 1%