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 22 31.4%
2 Netherlands 21 30%
3 United States 8 11.4%
4 France 5 7.1%
5 Czech Republic 4 5.7%
6 Germany 3 4.3%
7 India 2 2.9%
8 Russia 2 2.9%
9 Korea, Republic of 1 1.4%
10 Viet Nam 1 1.4%
11 Brazil 1 1.4%