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 164 72.6%
2 United States 33 14.6%
3 Germany 13 5.8%
4 Netherlands 5 2.2%
5 Romania 3 1.3%
6 Canada 2 0.9%
7 Hong Kong 2 0.9%
8 Japan 2 0.9%
9 Korea, Republic of 1 0.4%
10 Republic of Korea 1 0.4%