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 22 31.4%
2 China 20 28.6%
3 Germany 9 12.9%
4 Sweden 8 11.4%
5 Netherlands 4 5.7%
6 Republic of Korea 2 2.9%
7 Singapore 2 2.9%
8 Indonesia 1 1.4%
9 Taiwan 1 1.4%
10 Australia 1 1.4%