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 52 58.4%
2 United States 11 12.4%
3 Netherlands 9 10.1%
4 France 7 7.9%
5 Czech Republic 4 4.5%
6 Germany 3 3.4%
7 Taiwan 2 2.2%
8 Brazil 1 1.1%