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 16 38.1%
2 Germany 9 21.4%
3 China 8 19%
4 Taiwan 3 7.1%
5 Netherlands 3 7.1%
6 Republic of Korea 1 2.4%
7 Hong Kong 1 2.4%
8 Korea, Republic of 1 2.4%