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 19 38%
2 Germany 10 20%
3 Iran, Islamic Republic of 7 14%
4 United States 6 12%
5 United Kingdom 2 4%
6 Korea, Republic of 2 4%
7 Netherlands 2 4%
8 Ukraine 1 2%
9 France 1 2%