BPG致力于知识的发现和传播
Total Visits of This Article
2018 | 总访问次数
排名 国家/地区 数量 占比
1 China 192 81.4%
2 United States 18 7.6%
3 Germany 12 5.1%
4 Netherlands 6 2.5%
5 Taiwan 2 0.8%
6 Canada 1 0.4%
7 Singapore 1 0.4%
8 Ireland 1 0.4%
9 Japan 1 0.4%
10 France 1 0.4%
11 Vietnam 1 0.4%