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 171 46.5%
2 United States 86 23.4%
3 Germany 35 9.5%
4 Netherlands 32 8.7%
5 Canada 23 6.2%
6 Sweden 8 2.2%
7 Russia 4 1.1%
8 Romania 2 0.5%
9 Australia 2 0.5%
10 Thailand 2 0.5%
11 United Kingdom 1 0.3%
12 Korea, Republic of 1 0.3%
13 Singapore 1 0.3%