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 21 30%
2 United States 21 30%
3 Germany 15 21.4%
4 Netherlands 5 7.1%
5 Republic of Korea 3 4.3%
6 United Kingdom 1 1.4%
7 Pakistan 1 1.4%
8 Ireland 1 1.4%
9 Malaysia 1 1.4%
10 France 1 1.4%