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 49 45.4%
2 United States 23 21.3%
3 Germany 15 13.9%
4 Czech Republic 5 4.6%
5 France 5 4.6%
6 Ireland 4 3.7%
7 Ukraine 3 2.8%
8 United Kingdom 2 1.9%
9 Netherlands 1 0.9%
10 Peru 1 0.9%