BPG致力于知识的发现和传播
Total Visits of This Article
2021 | 总访问次数
排名 国家/地区 数量 占比
1 China 63 47.7%
2 Netherlands 20 15.2%
3 United States 10 7.6%
4 France 10 7.6%
5 Germany 10 7.6%
6 Korea, Republic of 10 7.6%
7 Canada 3 2.3%
8 New Zealand 2 1.5%
9 Sweden 2 1.5%
10 Czech Republic 2 1.5%