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 143 50%
2 United States 52 18.2%
3 Netherlands 30 10.5%
4 Germany 28 9.8%
5 France 18 6.3%
6 Taiwan 4 1.4%
7 United Kingdom 4 1.4%
8 Sweden 3 1%
9 Portugal 3 1%
10 Singapore 1 0.3%