BPG致力于知识的发现和传播
Total Visits of This Article
2020 | 总访问次数
排名 国家/地区 数量 占比
1 China 38 41.8%
2 United States 17 18.7%
3 Germany 16 17.6%
4 Netherlands 13 14.3%
5 France 3 3.3%
6 Russia 1 1.1%
7 Singapore 1 1.1%
8 Korea, Republic of 1 1.1%
9 Czech Republic 1 1.1%