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 59 42.8%
2 United States 32 23.2%
3 Germany 15 10.9%
4 Netherlands 11 8%
5 Russia 5 3.6%
6 Ukraine 5 3.6%
7 Sweden 3 2.2%
8 Taiwan 3 2.2%
9 France 2 1.4%
10 United Kingdom 2 1.4%
11 Korea, Republic of 1 0.7%