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 United States 31 36%
2 China 21 24.4%
3 Germany 15 17.4%
4 Netherlands 5 5.8%
5 Republic of Korea 3 3.5%
6 India 3 3.5%
7 Japan 2 2.3%
8 Canada 1 1.2%
9 France 1 1.2%
10 Ireland 1 1.2%
11 Israel 1 1.2%
12 Singapore 1 1.2%
13 Switzerland 1 1.2%