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 28 38.9%
2 United States 21 29.2%
3 Germany 12 16.7%
4 Netherlands 3 4.2%
5 Canada 3 4.2%
6 Republic of Korea 2 2.8%
7 United Kingdom 1 1.4%
8 New Zealand 1 1.4%
9 Korea, Republic of 1 1.4%