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 155 58.7%
2 Germany 46 17.4%
3 United States 38 14.4%
4 Canada 15 5.7%
5 Taiwan 3 1.1%
6 Czech Republic 2 0.8%
7 France 1 0.4%
8 Hungary 1 0.4%
9 Ireland 1 0.4%
10 Israel 1 0.4%
11 Singapore 1 0.4%