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 58 40.3%
2 Netherlands 25 17.4%
3 United States 21 14.6%
4 Germany 14 9.7%
5 France 11 7.6%
6 Russia 6 4.2%
7 Canada 3 2.1%
8 Korea, Republic of 3 2.1%
9 Hong Kong 2 1.4%
10 Czech Republic 1 0.7%