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 177 59.2%
2 United States 46 15.4%
3 Germany 43 14.4%
4 Netherlands 22 7.4%
5 Singapore 3 1%
6 Taiwan 3 1%
7 Finland 2 0.7%
8 France 1 0.3%
9 Mauritius 1 0.3%
10 Moldova, Republic of 1 0.3%