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 42.5%
2 Germany 16 21.9%
3 China 14 19.2%
4 Taiwan 4 5.5%
5 Netherlands 3 4.1%
6 Republic of Korea 1 1.4%
7 Singapore 1 1.4%
8 Canada 1 1.4%
9 Hong Kong 1 1.4%
10 Malaysia 1 1.4%